Caribbean Cruise

I don't think the weather gets very chilly in the wintertime in the Caribbean, but to be sure, you should find a weather site to look up the average temperature in December for whichever countr-y(-ies) the ship will be near and/or docking in. I don't know if where you live gets cold in the winter, but if so, you should probably carry both winter and summer clothes. While the cruise ship is leaving the port, you will still feel the cold until you get closer to the Caribbean. Or at least have one coat and long pants. For shoes, I'd suggest at least one pair of sandals, sneakers, flats and heels (and slippers if the trip is for more than one day). You should probably check out what activities will occur on the cruise for you to decide better.