I'm planning on going on July 29th it would be a Friday night check in. Would it be already booked up? It's a 2 hour drive from the beach and don't want to go out and get turned away.

this is a first come, first serve campsite without a camp host. if the campground is full, there are other options like chilao nearby

First come, first serve

It's best to get their early as possible

Yeah it's first come first serve every time I've been there there's always been spots available