We will be going on a 4 day cruise in December. I thought I read somewhere else that the photo CD was priced PER CABIN. I have a family of 5 and we are in 2 3 person cabins. My 2 sisters are going on the cruise also and will be in their own cabin. Will we be able to get all our photos on one CD or will it require the purchase of 3 CDs. If 3 CDs, don't think that will be worth it.