Hi, Melissa! As long as everyone is potty trained, you have a couple of options available for the children. Walt Disney World has children's activity centers in several of the resorts (including Wilderness Lodge). The centers are usually open from 4:30 until midnight, and they are awesome! The kids are provided with activities that include games, video games, snacks, and even dinner. My girls always enjoy visiting the Kids Clubs, and they never even consider them babysitting - just a fun night out for themselves.
Your other option is the Kids Nite Out Babysitting services. The sitters will come to your resort hotel room, and they are equipped with all sorts of fun and excitement! They have a handle on all kinds of fun and games that are age appropriate, and they can get the kids settled and sleeping, if bedtime rolls around while you are out. I have used them in the past, and I would definitely not hesitate to use them again. My kids loved the sitters, and I didn't feel a bit uncomfortable leaving them, even though they hadn't been left with anyone but family before. The sitter was professional and polite, and the kids had a great time.
If you decide not to eat at Wilderness Lodge, you can use the kids clubs at the other resorts. If you click
Walt Disney World Children's Activities, you'll find more information on both services, including hours and fees.
Have a wonderful visit!