There’s 2 or 3 loops in the state park, we got one of the walk up sites on a Friday night. $20 and includes entrance fee, you check in at the guard station at the entrance and they said park gates close at 10pm.

Had a great view and were able to walk to trail heads. Our section had vault toilets for each group of campsites, huge fire pits and two picnic tables at each site. Only con is that the brine flies were outrageous!! I know outside comes with bugs, but this was like a different level! They actually chilled out once the sun went down but during the day constantly landing all over us. So just be mentally prepared.