I found the following statement on the Smoky Mountain website. Can anyone tell me if shelter reservations are really needed in the Smoky Mtn. Nat. Park? I have also included a URL to the page speaking about reservations.

The park requires that you stay at designated campsites and shelters while camping in the backcountry.

Advance reservations are required to camp at the following sites:
• All shelters
• Backcountry Campsites 9, 10, 13, 17, 20, 21, 23, 24, 29, 36, 37, 38, 46, 47, 50, 55, 57, 60, 61, 71, 83, 84, 85, 86, 90, 113.

You can download a park trail map to find the location of backcountry shelters and campsites in the park.
Plan your trip and determine which sites you wish to camp at. If your itinerary includes a reserved site or any shelter, you must call the Backcountry Reservation Office at (865) 436-1231 to make reservations.

http://www.nps.gov/grsm/planyourvisi...ry-camping.htm