Maybe seasickness and wedding cake aren't a good combination. Or maybe the idea of getting married on a docked boat sounds just plain boring. Couples aren't limited to getting married on the ship: many cruise lines offer onshore ceremonies as well. However, there are strict time limits on these ceremonies (based on the ship's itinerary) and they tend to be much more expensive.

Holland America

Holland, an upscale line that attracts a slightly older clientele, has the highest prices, although rates for these "destination packages" include transportation, flowers, wedding cake, photos and champagne. Please note that the prices below are in addition to cruise fares (we'll add up everything at the end):

Jamaica: $1,695 to get married at Ocho Rios' Paradise Cove or pay $1,995 at the Sunset Beach Resort.

St. Thomas: For $1,650, choose to exchange vows overlooking the British Virgin Isles or the gardens at the Marriott Hotel Frenchman's Reef resort.

Grand Cayman: Couples can get married at a mansion built nearly a century ago. Choose a beach or gazebo ceremony for prices between $1,595-$2,300.

Half Moon Cay: Couples can get married at Holland America's private island, either on the beach or in the island chapel for $1,950.

Alaska: For $1,450, couples can get married in the Rainforest Glacier Gardens in Vancouver, or go for a pricier option: $2,595 to be married atop the Herbert Glacier in Juneau, via helicopter.

Many islands have residency requirements, blood tests, fees and other headaches couples may want to deal with ahead of time (e.g. the Cayman's requires a $200 fee for a marriage license while Jamaica has a 24-hour residency wait and charges $54 in fees). Contact Royal Ocean Events at 888/47-5511 or royalwed.com for more information.Celebrity Cruises

Which to pick--Aruba, Barbados, Cozumel, Ocho Rios, Grand Cayman, Juneau, Ketchikan, Key West, or San Juan? Planning a wedding with Celebrity (renowned for its cuisine) is a smorgasbord of options as it offers more island destinations for cheaper prices. Starting from $700 (the cheapest for land-based wedding packages), not including cruise fares, bride and groom duos can get hitched on one of 14 tropical locales. Marriage packages includes wedding officiant, bottle of bubbly, wedding cake for eight, bouquet, boutonniere and wedding certificate. A videographer and invitations are extra.

Celebrity offers high-season Caribbean cruises for around $850 per person for seven nights. Adding together the cost of two cruise tickets, the wedding package, and a sit-down reception for 20 guests(before departure), the grand total is $3,000. If those 20 guests come along for the cruise, the price jumps to $15,000 all together (about half of the cost of a conventional wedding ceremony). For more info go to celebrity.com or call 866/595-2352.

Royal Caribbean International

Were you jealous of Prince Charles and Lady Di's posh matrimony? You, too, can have a 'Royal Wedding' (hopefully it'll turn out better)but prepare to pay the price.

Royal Caribbean is offering a few on-shore island wedding deals directed toward those leaving friends and family back home. It's asking about twice the price of Celebrity but not as much as Holland:

The "Duet" package (without cruise fare) includes a wedding officiant, recorded music, bridal bouquet, boutonniere for the groom, champagne-toasted ceremony, photos, cake and a wedding certificate. It's $1395/couple for a port-wedding in Juneau, Nassau, Barbados, Bermuda, Hawaii, Jamaica, Cabo, Cozumel, and St. Lucia. It's $100 more in Grand Grayman and St. Maarten. For a seven-night cruise in high season, expect to pay between $450 and $500 per person in cruise fare. Total cost of the wedding is under $2,500. Adding extra champagne and more polaroid memories will run you more.

Royal, like Princess, offers a fare-ly cheap vow renewal package at $400 for an onboard ceremony, lovey dovey music on cassette, flowers, wedding cake, champagne, photos and a certificate. Guests are welcome to rent tuxes, get live music, and have personalized wedding announcements made up for additional moola. To book any of these deals call 888/933-7225 or go to royalcaribbean.com. Note: a $100 surcharge will be tacked on to package deals if the wedding is held in May, June, September and October.