Me and my fiance are trying to book a cruise, and we've noticed that prices are much better if you go in december or january, but we still want to be able to go scuba diving and sunbathe. Has anyone been on a winter cruise to the Bahamas, and if so, how was the water temp/outside temp? Also, someone told me that the water is very choppy in the winter and it's easier to get seasick, how true is this?