We've stayed at Jellystone in Cosby TN and had a good time w/ our 2 boys (8 and 6). Not the biggest park, but very nice. It's about 12 miles or so outside of Gatlinburg so if your spouse has access to the vehicle then he/she can take the kids in to town as well for some fun on one or more days.
There's also a Jellystone in Cherokee, NC, on the other side of the mountain. (Yogi in the Smokies) Much larger than the Cosby Jellystone if your kids are in to riding their bikes. Seems like there is more space to spread out there as well.
Both great places for the kids.
