So I took my Dobie up and camped for a second time, just the two of us. Went up on a Friday and arrived at 3pm. I got the very last site, all the way at the end of 9350. There were big piles of branches and leaves left from last year when they thinned out the forest. Huge muddy deep ruts in the ground. Very few trees at this particular site. Also quite aways from the actual rim. Absolutely no cell service on this spot. 1.2 miles to the vault toilet, which was an easy walk.
Long story short, not the best site, but I was just glad to nab one on a Friday. Everyone was quiet by 9:30pm. My neighbors were friendly, waving and saying hello and respecting each other's space. Lots of privacy.
Solo camping experience, first timer. Went on a Sunday and tent camped one night. Scoped the site out first and found a lot of great options available. There were still plenty of people up there that I wasn't totally alone, but enough sites opened up that there was a good selection. I opted for one right on the rim itself. The hosts were there and there were clean supplied vault toilets within a minute drive. Went for a hike at Woods Canyon Lake. Each site was just far enough away that you couldn't really hear each other but you were sort of in sight of people if needed. But still private and very quiet. You can choose between a rim site or go across the street and opt for a forest site. There is cell service.