Hi, Julia! There are a couple of things you might consider doing so that you and your husband can have some time to do the attractions together that the children don't want to do.
You might want to consider making a reservation for one of the kids clubs available on Walt Disney World property. There are six options, including the Neverland Club at the Polynesian and Simba's Clubhouse at Disney's Animal Kingdom Lodge. The hours are from 4:30 in the afternoon until midnight, and you pay by the hour for your kids. If they are there, they will be fed dinner, and they offer the children crafts, games, snacks, and other kids to play with! You can find more information on the Kids' Clubs by visiting
Walt Disney World Kids Activities.
When you click to visit that site, you'll also see information on the Wonderland Tea Party and the Pirate Adventure. You don't say if your kids are boys or girls, but these are options you might consider. This will give you probably enough time to get to a theme park for one attraction - maybe two. Both activities are great fun for kids.
The other option is the Kids Nite Out babysitting services. The sitters come prepared with all sorts of fun and creative ideas to keep your children occupied for whatever length of time you need them.
I hope this gives you some ideas! Thanks so much for the question!