This place is rad. You can stay here until 11pm if you don't have a camp reservation. You can also rent ATV to ride at the dunes which is super fun
Probably the best camp ground we've been. They always have an overflow camp site for just vehicle with a camper or RTT. We have a RTT. We paid $60 for 2 adult and 2 kids but the shower is included and super accessible bathroom. Only con about it was that it was a bit noisy after 11PM.
Make a reservation. If you don't have one, come super early to add your name on the waiting list. They'll let you know by 5PM if you got a spot and have a back up plan.