On a recent weekend, we spent a few nights in Gatlinburg, Tennessee and Pigeon Forge, Tennessee.  When we visited in 2016 and 2018, we rented an awesome Polaris UTV / ATV from a very friendly company on 321 in Gatlinburg.  Mountain Life UTV Rentals has been awesome! We rented, in total, three 4-person UTVs and a 2-person Slingshot. The rental staff is professional and the equipment is great.