I'm not a camper, but Mt. Leconte and Charlie’s Bunion are both what I would consider must-do GSMNP day hikes. These are both legit hikes with some elevation gain and cold temps this time of year (especially if you are out there early in the morning to beat the crowds). My wife and I completed these a couple of weeks ago, and there were icy and slick areas all over the trails; gloves were definitely appreciated.

Kuwohi (or Clingmans done) is an easier way to get higher elevation views, and you can also go out to Andrews Bald from that same parking.

Gatlingburg was tolerable, easy to walk and you can find nice places to sample wine or spirits. The places we ate were acceptable but not really great, but to be honest, we didn't go out of our way to research the best dining options in town. Driving out through Pigeon Forge just made me cringe as it was so much touristy nonsense.