Belize is a good place in the Caribbeab to go for a family vacation as well. There are a number of rainforest tours there such as Bird-watching,Rainforest ecology and a archeoligical tour of the Chan Chich area. They also have horseback riding activities there so it would provide a great time for your kids. And this is one of the perfect places in the Caribbean to go scuba divingLuxury link can give other accommodations in
Belize as well as other Caribbean islands.