Hi Tara,
December is a magical time of year to visit Walt Disney World. The theme parks and resorts are decorated beautifully for the holidays. I also love your choice of resort - Disney's Animal Kingdom Villas - Kidani Village is beautiful.
Disney has not yet released all of the fireworks schedule for all of December. In fact, I can see just up to the first day of your trip - December 11! On that day, Wishes Nighttime Spectacular at Magic Kingdom is scheduled for 9:00 p.m., IllumiNations: Reflections of Earth is scheduled for 9:30 p.m at Epcot, and Fantasmic! is scheduled for 6:30 p.m. at Disney's Hollywood Studios. I found each of these by visiting
the official Walt Disney World website and then searching the show name. Each page has a calendar on which you can select the date for which you wish to see the time of the show. I recommend that you check back to see when Disney releases the times for the rest of your trip. These may vary from day to day.
Disney's Animal Kingdom Villas - Kidani Village is so beautiful, and has so much to do for children. Activities for children may include learning to play African drums, African face painting, and wildlife games. The times for these activities do change, so you will need to consult the Activities Guide that you are given upon check-in for the times of these activities during your stay. I have swum in the pools in December at Walt Disney World, and they are open for quite a long time each day. Currently, the pool at Disney's Animal Kingdom - Kidani Village is open from 7:00 a.m. to 11:00 p.m. This might be shortened somewhat in December; however, I am not sure by exactly how much. Again I would ask this question upon your arrival at the resort.
I hope that this information is helpful for you, Tara! Please do not hesitate to ask if you have any further questions.