I camped here last year before the Ride the Rim bike ride and it was great. You cannot reserve sites this time of year - it is only first come first served. I planned on doing the the same thing this year and when I drive up on Friday September 13 the website still said “open” but when I got there the gates were closed. There was a sign that said “sorry for the inconvenience”. Luckily Thielspn View campground was open on the west side of Diamond lake.