Currently the sites are indivually owned - but still rentable!
I was hoping to stay here in the future so I made a phone call. While the location is still open, it appears that each individual site is individually owned now and you must book through a 3rd party site - like Air BNB - for each one. There is no longer a way to book thorough the campground itself, but it seems like a nice place to stay! I'll check it out before my trip.