This may not be of much help but we have sailed the week following Thanksgiving. It is a great time because of the discounts and the ship was only 85 per cent full. The weather that time of year is wonderful and seas are generally calm according to the captain. However, we talked with the kids staff and captain about the week before us. They said the seas were rough two of the nights but I guess that could really happen anytime. The kids staff did mention that there were "ALOT" of kids the week of Thanksgiving and the ship was full to capacity. I think one said there were about 900 kids but don't quote me on that. With the rougher seas, they said they really had their hands full and were enjoying the smaller group on our cruise. Thats about all I can give you. I'm sure others have been on a cruise at that time that can add more.