There are way too many things to do in this area. Connor and Haley 100% recommend making this a week long vacation to see all of that Eastern Tennessee has to offer! Most of, if not all, of these places require spending money or buying tickets.
Smoky Mountain Alpine Coaster
867 Wears Valley Road, Pigeon Forge, TN 37863, (865) 365-5000
We did this about a year ago. I definitely recommend this to people who enjoy thrill rides.
Downtown Gatlinburg has plenty of stores to shop at for souvenirs. If you are over the age of 21, there are plenty of distilleries, breweries, and wineries that offer cheap/free taste testings!