Concerning your campground selection.
Twin Creek is a nice campground but tight. It is close to downtown Gatlinburg. We have stayed there many times mostly with smaller campers but once in 35 ft MH. Again very tight.
Pine Mtn is very very nice and only a few years old. Has very clean showers and restrooms. Easy to get into and wide roads. Long pull throughs. Is located back off the strip so town hustle and noise is not a problem. It is located on the Gatlinburg end of PigonForge so if you want to go there the drive is only about 6 miles.
