SeaWorld has their special Christmas Celebration going on for three of your four dates 12/2, 12/3, and 12/4. It's really incredible (a favorite of my family and extended family). I would highly recommend going. I think you and your nine year old would love it. They decorate more for Christmas than Disney or Universal and have so many special Christmas shows that are just wonderful. IMHO they own Christmas in Orlando. Here's a link to the SeaWorld website in case you want to look at some of the offerings for the days that they have that event. This gets me in the Christmas spirit more than anything else we do in Orlando when we go down for the Christmas holidays.
The general SeaWorld website is great. Below, though, I have the link directly to the special things on top of the great normal offerings they have.
https://seaworld.com/orlando/events/christmas-celebration/shows/