" Regular" wedding etiquette usually requires attendants to pay for their own clothing, accessories, hair and make up, travel, lodging, and gifts. However, since destination weddings are on a much smaller scale, you may choose to help out. Remember that what you choose to do for one person, you must do for all. You could consider the following:
Negotiate group discounts on airfare, lodging and transportation. If you choose to have a wedding web page, make sure you publish these prices to make them available for your guest.
Rent a couple of large houses and offer them up for your guests to stay in.
Ask your guests not to give you a gift and make sure you let them know that their presence was the best gift they could have given!
Organize as many "activities" as you can, so that your guests are always taken care of, even when you decide to take some "alone-time" with your spouse.