I am taking my kids to Jamaica and the Caymen Island in January, but I am worried about the weather. We are from Alabama and are used to warm weather, what is the temperature like in January. Also, can you recommend what some activities would be good to do, the kids are 22,21,19 and 15. Thanks for any information you can provide. We have cruised before, so I am not interested in cruise ship information, only in things to do in Jamicia and Caymen Island.