through Knoxville on I-40, then down to Sevierville and Pigeon Forge. Lots of really nice campgrounds and RV parks that you can get into before getting into the mountains. No road problems from Knoxville, Hills and curves are just interstate normal. Park MH, use car for local trips, no problem except traffic. I-40 across East Tennessee has mountains, long grades, and is somewhat twisty. It is the major east-west route for trucks, and they manage it OK, abet somewhat slower. To get to Gatlinburg from Louisiana, you gotta cross the mountains somewhere. You will(should) NOT be taking the Motor Home into Gatlinburg, or into the Park at all. It just won't fit, period. In Gatlinburg, even bicycles are a challenge.