It really depends on what you're into! There's something for everyone there. My husband and I go to Sevierville about once a month and hit all the antique stores. There is an outlet mall that people come from all around to shop at. There are lots of attractions like The Aquarium and Haunted Houses and Wax Museum-type things. We splurge on pizza when we are there (it ends up costing about $50 by the time we pay for parking and all!) at a place that I think is called Best Italian. There aren't as many shows now as there were in the past (lots of giant buildings for sale!) but you'll find plenty to do when you're here!
I'm about 20 minutes away, if you feel like PM'ing. I may go to the quilt show anyway but will probably have to skip the Gatlinburg pizza!