You can Rent Cabins, You can bring your own camper or tent (I suppose you could even just sleep under the stars too). There are companies that you could even rent campers from who will come in, set it up for you and then take it down when you are done but I have never used them.
There is lots to do. There is a nice pool (Outdoor) with a snack bar, you can rent canoes and bikes. They do Segway Tours, plus there are lots of open places for things like tossing a ball around or similar. Pets are also welcome at the fort.
There is the Trails End Restaurant. We really like it but I have heard that Lunch might not be the greatest. Personally, I don't know, never had it there.
They also have the Hoop-dee-doo Musical review, Chip-N-Dale Campfire and movie, horse & carriage rides, and just a plethora of other things. So if you like the outdoors, it's an awesome place to stay. Depending on the season you will find that many campers decorate their sites. Christmas time is awesome to just walk around and see all the decorations.