We have stayed at Pigeon Forge KOA Kampground. We stayed there because you could ride there trolly to Dollywood.
I also love to stay at Cades Cove Campground. If you've never been to Cades Cove it's worth the trip. It has an 11 mile (one way) senic loop to see wildlife (Deer, bear, ect.)and old pioneer structures that you can walk through.You drive your car or they have hayrides. I would suggest to drive if you can because you can take your time at the old houses and buildings. They also have a campground but no hookups, water and dump stations are available. Nice Campground. If you have a generator it's a great place to stay. It's about 30 minuites from Pigeon Forge.