Sugar Hollow is a nice quite place to camp; only about 2 miles and less than 10 minutes from the host hotel. I've stayed there a couple of times. There are about 75 sites; most have electricity but only a couple have full hookups. There are a few tent sites. There is water access in several areas throughout. There are two "Comfort Stations" with showers, commodes, etc., and there is a dump station.
Sites are $20 per night and they do NOT take reservations. Closer to your time of stay you coordinate with the Ranger by calling (423) 335 - 8398. Be sure to call as the location is hilly and some sites are difficult to access with a large RV.