My family is scheduled to cruise on Harmony of the Seas and I was wondering what type of holiday activities might we expect while on the cruise. I recently cruised on the Allure of the Seas after Thanksgiving and after we were on the ship we found out there was an Ugly Christmas Sweater event. If we had known, we would have planned for it. Has anyone cruised during the Christmas holidays and can you tell me what holiday events might we plan for or look forward to?