My husband, two of our kids and I neeed a place to camp while attending a festival in Mariposa. I wasn't expecting a state park camping experience by any means, but this was ridiculous. The rate I was quoted ended up being for two people, so to my surprise I was charged extra for each kid. We were assigned our spot which was probably 10ft wide by 20ft long if that. Someone else compared it to an unpaved parking lot, which is pretty much dead on. There i sone bathroom for the whole place and the quiet hours are not enforced. The first night there we had neighbors check in and set up camp after 10pm. They were loud and decided they wanted to video tape and take pictures of their late night set up, so as we were trying to sleep we were "treated" to the flash of their camera going off in non-stop until I finally said something.
If you need a quick place to stay along your way to Yosemite or wherever, it will do, but I would never choose this as a place to go "camping".