A beautiful, colorful hike above the clouds leads to an open camping area. It is about 4 miles of hiking, and just past a cabin that is sometimes available for use. Fortunately, I had brought layers. It was August and I don't know what the temperature was, but I know I could see my breath when I exhaled! I was solo, there were a total of 4 other people camping - a family of 2 that appeared to be there for some period of time (although the limit is 3 nights) and another group of 2. Our sites were so far apart though that we didn't really interact at all.

Permit info, copied from the park service website: Camping permits can be obtained at the Headquarters Visitor Center between 8:00am and 3:00pm up to one day in advance. Permits are free and require photo identification and a 10-minute orientation.