Track Rock Campground & Stables in Blairsville GA is a lovely family owned and operated campground, with horseback riding & hiking on site.
https://trackrock.com/
Hartwell lakeside RV Park in Hartwell GA used to be a state park, but is now privately run. Many beautiful waterfront sites were available when all the other state parks were full a month or so ago (peak fall).
https://hartwelllakesidervpark.com/