In the Gatlinburg area, how about Misty River RV Park. It's in Wallen, TN and about a 45 minute drive into Gatlinburg/Pigeon Forge. We had a group camping trip there several years ago and it was nice and had a huge field in front of the campers, toward the river that the kids played in.
They have a decent playground and about 75 sites, a pool, clubhouse and is rated really high. They have about 6 bathrooms with commodes, sinks and showers within the bath house. That sure helps with several kids and they also have a laundry in there, too. Put some clothes in, go shower the kids, put them in the dryer and then take your shower. Clothes are ready when you get out and you can head back to your trailer. The rates were not bad.
We picked site E3 or E4, which are pull-in sites, then you bring your vehicle back around to park behind. It was kinda strange, but it was really easy to park. It was also very convenient for watching the kids play in the field.
There are several seasonal sites, but they were very well kept.
Just a suggestion. There are lots and lots of campgrounds in the area and most of them are nice.
