The first cruise we took our 3 sons on was back in 1999 on the Tropicale. We left on 12/23 and I thought I was really being a smarty by taking a small Christmas Tree and some of the presents!
Boy, oh Boy, you should have seen the stuff people brought to decorate their cabins! Some of them brought full-size trees, lights, wreaths for the cabin doors -- unbelievable!
Needless to say, we had a blast. The ship looked beautiful, lots of very nice decorations, the pictures were great to give as gifts, the Captains Christmas Dinner was very special. My sons were almost overwhelmed, but became immediate cruise addicts.
We haven't gone on another Christmas Cruise, but they are in college now, so we take an annual Spring Break cruise.
Hope you have a super time. It's wonderful on a holiday cruise! (or any other cruise, for that matter)