At least it's in the park...
First-come, first-served campground. My friend and I stayed outside the park on a Friday night, then got up early Saturday morning to come stalk these campsites at 6am. We circled around for a bit, accidentally drove over a large rock, sat there looking defeated, then some nice woman came up to our car and told us they were leaving soon. We were so thrilled to get a site! Set up our stuff, then went to hike Cloud's rest.
The evening however was pretty annoying. Like the reviewer before me, we were next to some large family get-together, around 15 people, playing music and making a racket. there is definitely NO ONE enforcing quiet hours. I always being ear plus so I was able to fall asleep...but it was definitely the opposite of a peaceful night in nature.
So...just bring ear plugs. And watch the rocks if you're driving a low-clearance vehicle.