If you like hiking, Mt LeConte and Charlie’s Bunion both had decent viewpoints with less crowds. If you’re up for a challenge, visit Clingman’s Dome when the road is closed. Little to no people are there. If you are a fast hiker, you can probably hike it in one long at from Newfound Gap. Otherwise it’s 2 days (or 3 if you like from the bottom of the mountain like I did).

Also, Clingman’s Dome is best at sunrise/sunset, and in fall, although because of that, that’s when it’s most crowded :(.