A few years ago we took a 4-day on Fantasy in December and ran into a storm about 2 hrs out of Pt. Canaveral. It surprised everybody at dinner that first evening, as it was unusual for that time of year. It only affected us for an hour or so, but you should have seen the many cases of seasickness at our table. It was a freak storm, believe me. We live in Orlando, and a storm like the one that night is a rarity in December. I'm sure that your experience will be a lot more enjoyable.