Of all the wedding party/wedding favors that I have seen at all the destination weddings that I have done, the biggest hits have been the ones that are something that they can use while they are on the trip with you. customized flip flops and beer koozies have been a huge success. Making a little care package for everyone with things like koozies, flip flops, sun screen, aloe, underwater disposable camera, and things like that are a great idea. It's also fairly affordable.