by the way, I see a LOT of sporadic availability at ANDREWS STATE PARK Campground, right at the end of the PC BEACH east end... you may have to move during your stay, but it's still possible if you don't to book all your nights at a single site... use the 'next available dates' view to see sites available during your timeframe...
https://www.reserveamerica.com/explo...ableDate=false