This is a quiet place to camp, and most of the sites are well placed and nice. The campsite itself was not extremely busy for a Friday night, but the nearby trailhead is extremely busy and people often drive/bicycle through the campsite.
Be warned: this campsite is above 8,000 ft. In altitude and the weather may change suddenly, especially early or late in the season. The night I was there, we had a 30 minute violent storm, complete with hail so thick you couldn’t see past the car (luckily I was in said car). Nothing was damaged, and the following morning we had blue skies and sun.
While many of the sites are reservable, there are 6 sites at this time (June 21, 2024) that are first come first served (up, from the 3 in an earlier review). This does give walk-ins a fair amount of choice.
America the Beautiful pass gets you 1/2 price.