Hi Lisandra! There is nothing more special and magical then Christmas at Walt Disney World. You have a year to wait but it will be well worth it.
My choice for a stay during this holiday would definitely be the
Fort Wilderness Cabins. Many, many campers and cabin guests will decorate their sites making it look like your neighborhood Christmas decorations at home. Over the last few years one RV site even duplicated the castle show and fireworks through a computer program and it was amazing. If you can afford at least a few nights of renting a
Golf Cart during your stay it will be worth it so you can take drives through the loops to check it all out. You can reserve these a year out and suggest you do so as they will run out quickly. Rent them for the length of your stay and then decide how many days you might really need them as it gets closer and cancel those days not needed if you can't keep it the whole time. The golf carts are an added expense to the vacation but they are so much fun to have at the Fort and allows you to get around without the internal bus transportation.
The cabins will suit your needs as well for having private areas to watch tv while the girls head to bed in the bunk beds. They have all been refurbished and will offer full kitchens for your convenience and a nice large screen tv. The deck is a fun place to have some of your meals and there is a grill there to offer a cookout possibility. Deer might be just outside your cabin to watch or flocks of turkeys. There are playgrounds, swimming pools, Chip and Dales Campfire Singalong and much more here in Fort Wilderness.
It is certainly my family's favorite place to stay and especially during a holiday when it is lit up and magical!