In Dec, we stayed at Cedar Hill State park. With the entrance fee of $5 per person for overnight, a full hook up site was $40 per night plus tax. Not horrible, but having to pay $10 per night for access fee seemed a bit much. Having said that, I knew it going in (had done my research), and I was prepared for it. Not upset about it, just commented (and commenting) on it FWIW. I still think some level of consideration for campers would be good, but would probably be reflected in increased camping spots from $30 per night to something higher.
It is what it is, and I still very much enjoyed the time there. It was close enough to all my relatives, yet a great sanctuary to 'get away', when needed.
Mike