If it still the same as when we were there last June, they do not allocate camp sites, rather, "find any spare site you wish". Problem was when we arrived (4PM and failing light), the park was almost full and with poor park layout maps and poor site marking, we could not find a site!!. Eventually squeezed in when someone moved tier car for us to make space.
Was better 2 weeks later on return trip as we got there sooner and there park was only half full, but still a bit confusing.
They said they were working on improving this situation but do not know if that was hot air or fact.
As said, rubble underfoot, but the facilities are close and up to scratch