Windjammer's Hibiscus package is an even $500 per couple and gives future Mr.'s and Mrs.'s a wedding consultant, an officiated wedding, wedding certificate (or vow renewal), cake, bridal bouquet, champagne and dinner at the Captain's table. Drop a few more c-notes for its Jasmine and Orchid packages including more photos and perks.

Tack on these prices to the cost of a $700/per person cruise ticket for six-days and wedders end up spending $3,000 for a nearly week-long wedding. That's about 10 percent of what a one-day wedding could cost. Of course, those who want guests to sail along can easily run that number up: 18 guests for six days and the Orchid deal would be around $15,000. But because of the size of the boat, a ceremony and reception on board isn't an option. Visit windjammer.com or call 800/327-2601 for booking information.

Norwegian Cruise Lines

Unlike Carnival and Windjammer, Norwegian is all about the guests. Many couples bring the hordes of family and friends aboard for a few hours pre-cruise to have the ceremony, then boot them off before they actually set sail. Of course, the more popular you are, the more you'll pay. Here's what Norwegian gives offers:

The $799 "exclusive" package includes an intimate ceremony run by an on-board officiant, recorded music, a marriage certificate, photos, champagne and a 10" cake. Prices for on-board weddings start at $1,100, $1,450 for a land wedding. Flowers, music, transportation and reception cost extra.

Of course, the total amount couples spend depends on how long they sail. Cruises in Nov-Feb range from $499 to $1,000 per person for a weeklong Caribbean cruise, so the most marrying twosomes pay is $4,399 with the most expensive packagea fifth of what a cheaper-end church wedding would cost. For more info go to ncl.com or call 800/392-3472.

Princess Cruises

In the middle of the pack price-wise, Princess's claim to fame is that it's the one cruise line that can actually marry people while it's sailing on international waters (passengers on all other cruiselines have to wed while docked or on an island). Why is this? According to atlastravelweb.com, "The marriages conducted on board will be performed AT SEA by the Captain of the vessel under authority of Liberian Maritime Law and are recognized under the Law of Liberia as valid marriages." Princess is uniquely registered with the Liberian government and the U.S. recognizes legal Liberian marriages (I think I get it).

Any hoo, because of its newer ships and consequently heftier price tags, Princess' weddings are more appropriate for couples going solo or those renewing their vows. For $2,998/couple, we found a complete (meaning cruise included) 10-day wedding/honeymoon cruise for two with a Mexican Riviera Itinerary. It includes a a candle-lit ceremony at the Hearts and Minds on-board chapel (while sailing), floral arrangements, a wedding coordinator, roses, a boutonniere, a photographer to fill a complimentary photo album, live piano music, champagne, flutes to keep, a sculpted cake for two, and a certificate. Multiple that price by five to get anything close to that at a regular wedding. Check out theweddingexperience.com, to book, or call 877/580-3556.

Divorce rates are over 50 percent so married-folk still working at it should be rewarded. Princess' "Renewal of vows" lets couples do it all over again. For $205 per duo, couples get a ceremony (usually in a group of other couples), an orchid bouquet, a certificate of renewal, a portrait of the ceremony, and champagne with flutes. Packages including robes and facials cost more.

Add it to a weeklong cruise averaging from $399 to $599/person between Dec. and Feb. for a cost of about $1,700 total. Visit princess.com for more info.

Land ahoy!