I'm not sure if you guys can help me on this but I have a quick question. My fiance and I are going on a eastern carribean cruise for our honeymoon and in our booklet we got from disney it said that we would just need our birth certificates and a photo id not an actual passport. Would that work for us? We really don't need the passport for anything else and could use the money we would save not getting them. I'm just really worried about not having everything in place! Thanks so much!