There are lots of choices in Pigeon Forge and Gatlinburg so you shouldn't have any problem finding some place to stay at that time. I agree about finding one near the trolley route, very convenient to get around town on. Gatlinburg is more walkable than Pigeon Forge is. It all depends on your interests and what you care to see. Do your research online, you can get discount coupons on there too. If you like the National park setting check on getting into Elkmont campground, it is fantastic but hard to get into being it is book up all the time.