Got to check out Chattanooga
Ten years ago I would not have suggested Chattanooga but this city has made a dramatic turnaround recently, downtown especially. Very nice restauraunts, the Tenn. Valley Aquarium is first rate, Bluff Arts district has the Hunter Art museum plus several coffee shops and restauraunts.
Chattanooga became HQ for TVA several years ago and they pumped tons of money into the city and encouraged clean industry. No more foundries downtown. All buses operating in the CBD are electric. Tenn. Valley railroad museum operates a steam locomotive that has 45 tour of the valley.
Only one viable campground for buses and thats Holiday Travl-Park off I-75 at exit one. Tell them your in a bus and they'll be sure to get you in a long site. 50 amp, free wi-fi, and real nice people.
I used to live in Chattanooga years ago and our daughter still does and it never ceases to amaze me how much this town has turned around.
Take a few days and check it out.