We recently visited Fall Creek Falls State Park, Tn while enroute to Georgia. The Tennessee countryside is an enjoyable backdrop to this meandering road trip and you are very close to several other excellent Tennessee SPs.
I noticed a sign on the way in to Fall Creek Falls advertising a yearly festival, the “Mountaineer Folk Festival” the weekend after Labor Day. http://www.mountainglenonline.com/thingstodo/events/mountaineer-folk-festival-at-fall-creek-falls-state-park.html
The park also has a nice looking golf course, the Tree Top Canopy Challenge and an extensive facility area including the visitors center, gift shop, general store, swimming pool, laundromat and grill.
When I visited last year it was extremely busy and the attractions were crowded. This year I visited on a week day after school was back in session so it was mostly retirees who haven’t started their migration south yet ;) at the campground. Fall Creek has a large spread out campground with several choices , primitive walk-ins, glamping or something in between. There are gravel sites and paved. A picnic table, fire ring and grill as well as electric and water hookups. The facilities are centrally located in each area.
We stopped at Fall Creek Falls first and made the trek down to the base of the falls after first visiting the overlook. Moderate, technical,( rocky, slippery, wear hiking shoes, carry your flip flops for the wade in the pool below) 1.6ish mile round trip hike. When you leave the Fall Creek area there is a one way road you can take to Piney Falls it has some picturesque views of the area.
Piney Falls is worth a look too. I love suspension bridges, my dogs not so much. Piney has a .4ish mile round trip hike that includes a long suspension bridge with a short scramble down to the river.
I also noticed some bike trail trailheads within the park, something else to enjoy while visiting.
Fall Creek Falls is definitely a place you can spend a week or more at and do something different everyday.