Both? Im just mad at the world dangummit
. I know its not directed at me but I more blame the towns and permitting /planning for the cluster screw of having that much traffic without infrastructure to support it. GSMNP is supposed be the most visited NP by a factor of 2X more than the Grand Canyon and with the easy access / parkway sometimes I think its too easy for its own good.
Badlands, Zion, Arches, Big Bend, Acadia, Boundary waters, Glacier, and in my own home state Outer Banks, et al... are still fairly pristine due to the local municipalities being judicious in their development so as not to ruin what is great about them. Greater Sevier county planning and tourism not so much.
Sorry for the derail but OP if I were going I would stay on the other side of the park in Bryson City, Catalochee valley, Maggie Valley and drive over to Gatlinburg once just to get my tourist fix ( go cart track, tshirts, pancake houses, helicopter ride) but I hope you have a great time wherever you stay!