Tracie:
If you're visiting Disney World over Thanksgiving, I would recommend that you first consider the resorts that typically feature special holiday displays. In the lobbies of the
Boardwalk Inn and
Beach Club sit edible displays and carousels while the
Grand Floridian is home to a life-size gingerbread house. The
Contemporary also houses a scene made of gingerbread, and you can buy gingerbread "shingles" to enjoy while you look at the chef's creations.
Wilderness Lodge sports a stories-tall Christmas tree and when you pair it with its giant fireplace and cozy lobby seating, it's a solid pick and more budget-friendly than the
Deluxe resorts on the monorail or around Crescent Lake and the Boardwalk.
Even though you have children that vary in age, I bet all of them will be old enough to meet the height requirements on almost every attraction at Disney World. It's easier to talk about the attractions that
wouldn't suit their ages (Barnstormer or Aladdin in Magic Kingdom, PlayHouse Disney at Disney's Hollywood Studios) than to list the pages of entertainment and attractions for the older two.
I would recommend taking a few moments to visit each park under the Parks & Tickets tab at www.disneyworld.com along with the Things To Do tab on the site to get a glimpse of what's in store.
Wishing y'all a magical vacation!
Whitney