Hmmmm, guess I won't be in a hurry to visit you guys over there going by the sounds of things here.
We also have similar problems here in W.A. regarding overcrowding at camp sites, it's gotten so bad that the authorities are considering implementing a reservation system where you need to book your site in advance and there would be a restriction on numbers allowed into the area. It's suggested such a system would resolve the holiday/L ong weekend crwod problem.
However, from where I sit, it won't do any such thing, as in my humble opinion the problem lies not in the crowds squeezing into camps sites, but rather in the authorities closing and reducing the number of available sites for us to use. I'm personaly aquainted with at least SIX such sites being cloesd to us here in the West over the last 5 years, all the user of those sites are now being directed to the ONE site.
How's that for intelligence from our Parks people ?
Another issue that should also be addressed, is the filthy, lacksadasical attitude of some campers themselves, who it must be said, are their own worst enemy.
Some of these people will leave their waste lying about wherever they please, isn't it wonderful to visit a camp site and see the white toilet paper lying about like confettee ?
In one case I was horrified to find a group of campers camping on a beach head near a river, they had dug a waste pit into the sand and were leaving their wastes there.
When I mentioned something about it, I was told it was hygenic and would be washed away at the next high water flow.
Course no one considered where it would be washed away to, the poor buggers downstream, who were probably relying on said water for drinking purposes.

However, it also must be said, Authorities have let the camping fraternity down bigtime by allowing facilities to become run down and in some cases, downright dangerous due to erosion.
This is something I've witnessed ever since the Federal Govt relequished their handling of National Parks management in their efforts to cut operating costs.
Yet, it is claimed the recreational industry is booming, hmmmm, wonder what we'll all do with our recreational stuff, if we've got nowhere to go with it ?