If you go directly from the air-conditioned ship out onto the open-air deck (which is usually warmer and more humid in most cruise destinations), your camera's lens is likely to fog up. Warm the camera with your cabin's hairdryer on a low setting or briefly leave it out on your balcony so it can acclimate to the weather.

If you're traveling solo and want some company for dinner, try the sushi bar at a Japanese restaurant. It's a great place to meet locals. Plus, you'll receive extra attention and special recommendations from the chef.

Put an address label on your one-time-use camera. At a Final Four game in Indianapolis, we exchanged identical Kodak Fun Savers with another traveler so that we could take souvenir photos of each other with our respective cameras. But afterward, we couldn't tell whose camera was whose. Luckily, I remembered how many exposures remained on mine, so we got ours back. Next time, I'll just label it.

Before I visit poorer countries, I pop into a thrift store and pick up some toys, stuffed animals, and an old suitcase or carryall. I try to avoid toys like Easter bunnies or Santas, which could be offensive, and expensive things that might embarrass parents. The contents of my extra bag bring joy to countless kids who have never had a thing.

Before leaving on a trip, I print the names and addresses of my friends and family onto clear mailing labels. (All standard word-processing programs have preset templates for creating address labels.) Then, I take the address-label sheets with me on vacation. Since the addresses are already saved in my computer and the mailing labels are adhesive, addressing postcards has become really easy.

If you get lost on a ship, remember that most share a common layout. The lido-deck buffet restaurant, for example, will almost always be in the back to accommodate comfortable outdoor seating in the least windy part of the ship, while the lounge/theater will be in the front because wind is not a factor (there are no windows).

I unpacked a pair of black slacks recently to find them covered with white fuzz. I didn't have a lint brush handy, so I used the luggage sticker from my bag--the gummy side took the lint right off.

For the most comprehensive information regarding travel by train or by ship, check out seat61.com. I've found that the site has all sorts of helpful advice for Africa, Asia, Europe, and the Middle East.

On a Northwest flight from Wichita to Cleveland, a piece of my luggage was delivered more than a day after I arrived. In the meantime, I had to buy some replacement items. Save your receipts! I turned in the receipts when I checked in for the return flight, and the ticket agent issued me a $50 check.(Northwest allows up to $50 in interim expenses for the first 24 hours, and $25 for each day afterward, with a maximum reimbursement of $150.)

Rather than risk losing your department-store credit cards and club-membership cards, you should really leave them behind when you go somewhere you won't need them. Your purse or wallet will be lighter and your worries fewer.

Ask your flight attendants for dining, lodging, shopping, and sightseeing advice. Most crews have up to the minute information gleaned from layovers, which they're more than happy to share with passengers. You can count on flight attendants to seek out budget treasures. I know—I've been married to one for more than 21 years!

Whenever I go somewhere, I bring a supply of postcards from my hometown. I write my name, address, and e-mail on the back, and offer a card to new friends so we can keep in touch. I also pack small souvenirs (key rings, etc.) that carry my local sports teams' logos. They make meaningful but inexpensive thank-you gifts for the small kindnesses that ease one's way during a trip.

To ensure the studs of pierced and delicate earrings don't get damaged, I put them in a film canister. An added benefit is that they're less likely to be stolen when left in a suitcase or hotel room, because thieves presume there's nothing inside but film.

When on vacation, I split my cash into envelopes, one per day, so I can keep track of how much I'm spending. If I need to dig into the next day's cash, I'll know that I've overdone it, and if I want to stay on budget, I'll have to cut back the next day. Any money left at the end of the day goes into a separate envelope. I've actually come home with money this way!

I was booking tickets online for an upcoming flight to Europe from the East Coast. One particularly attractive fare was offered on a U.S. airline as well as on its foreign "partner airline." Same plane, same flight, same base price. But it was more than $100 cheaper per ticket to book with the foreign airline versus the U.S.one. We saved more than $400 for four tickets, but we'll be on the same plane!

Some cruise lines offer discounts on a future sailing if you book it while on a current cruise. Back home, you can transfer the booking to your travel agent and work with them to try to lower the price even further. You'll be able to cancel your booking at no cost if you follow the cruise line's cancellation schedule. This is a great way to get some of your onboard expenses paid for in advance.

If you're traveling overseas, be sure to check the fine print concerning passports (go online or call the country's embassy). I had three months before my passport expired and found out at the last minute that I needed six months' leeway to enter Tahiti. Luckily, I was able to get a new passport just in time for my vacation.

Whenever my husband and I get new pairs of eyeglasses, we relegate the old ones to our luggage, along with an inexpensive repair kit from the drugstore. If something happens while we're away from home, we can hopefully fix the glasses ourselves. If they're beyond saving, we have the backup pairs to get us through the rest of the trip.

Bring your own linens. They're useful in a million different ways. Obviously a soft cotton pillowcase makes those scratchy airplane pillows bearable, but it can also be used to gather loose items when deplaning. A nice sheet will cover up an ugly bedspread or sofa, and makes a great tablecloth or picnic blanket.

I teach a Tulane University seminar on independent European travel for first-timers. Until recently, I advocated Europe's great rail networks as the way to go. Now, with the plethora of budget airlines, I recommend a combination of the two. But it makes the planning stage—which I find almost as much fun as actually taking the trip—more involved. Thank goodness for whichbudget.com, a Web site that lists, by city, which budget airlines serve which cities. Then, to find links to all of Europe's state railway Web sites, visit railfaneurope.net. Each site generally features a travel planner and, almost invariably, an English-language option.

Once the hotel shampoo bottles I always seem to bring home are empty, I refill them with my own brand of shampoo, conditioner, and shower gel--instead of buying travel-size containers at the drugstore. I toss them, along with other small items (toothbrush, toothpaste, nail file, pillboxes, and a comb), into a medium-size Ziploc bag, and I'm ready to go; the clear plastic lets me find things easily.

Carry a Polaroid camera when traveling to developing countries. In Cambodia, several village children gathered around us, posed enthusiastically for pictures, and were fascinated by their images in our digital camera. We wanted to send them the pictures, but they were unable to tell us their address. Polaroids would have solved the problem!

After looking for years for the perfect toiletries bag and being frustrated by many that were less than ideal, I finally discovered one that is just right: a soft-sided lunch box I bought at the supermarket. It has an outer zipped pocket with small compartments and slots perfect for often-used items like a toothbrush and toothpaste. There's a small removable zipper pouch inside (meant for a small ice pack) for those smaller, hard-to-find items like nail files and pill bottles. The remaining space inside is just right for larger items like shampoo and hand lotion. Other helpful features include both a small handle and shoulder strap and a waterproof, easy-to-clean interior. As an elementary school teacher, I know firsthand that it'll last: It was designed to withstand daily use by kids!

I agree that the anti-seasickness medication for cruises, Bonine, is excellent and effective; but there is a budget way to buy it. The primary ingredient in Bonine is meclizine (25 mg). While a package of eight Bonine tablets costs just over $4 at a drugstore, you can buy a bottle of 100 generic meclizine (25 mg) for about the same price. This is an over-the-counter (no prescription needed) item, but you usually have to ask for it at the pharmacy counter.

Create an ID page for each of your children before you leave on a trip. In addition to vacation contact information (hotel name and phone number), include the child's name, a current photo, home address, phone, date of birth, Social Security number, passport number, hair color, eye color, height, any identifying marks, blood type, allergies, medications, doctor and insurance phone numbers and ID numbers, immunization schedule, and fingerprints (these don't change, so investing the time to have a set made is worth it). If the unspeakable happens, the ability to hand over instant, concise information to authorities may prove invaluable. Update it before every trip.

Baby wipes aren't just for babies. Slip a travel-size pack into your carry-on bag and use the wipes to kill germs on public toilet seats and in phone booths. In a pinch, they can also remove stubborn stains from clothing.

During a visit to Mexico City, I was sitting in a plaza near a fountain, watching the locals stroll around in their Sunday best. Nearby, an older gentleman was playing a concertina; his music perfectly framed the scene. I took lots of pictures, but I didn't have a way to capture that music. Now I pack a small tape recorder along with my camera.

When I called to book a hotel room in Budapest, I was offered a rate of $75 per night. After I told the concierge that I was looking for a room in the $35 range, he agreed to the lower price without much fuss. It sometimes pays to barter.

When we come home at night, my wife and I each take a dollar from our wallets and put them in a special spot. We deposit what we've collected into a travel account at our bank every few months, so at the end of a year, we have $730 toward our next vacation—not counting interest.

Pack light, or that great deal you found on airfare won't seem that great. On a Ryanair flight between Glasgow and Dublin, my husband and I were charged over $100 for excess baggage weight (the airline tickets themselves cost less than half that). Be sure to check the weight limits—especially on low-fare airlines—before you leave home.