George/ISBI, you really should put a winky after that post, you naughty thing!
Barney, it's pretty much first come, first served on site space, but some consideration to the fact that there are heaps of people and not much space would be prudent… The area for camping is restricted by lots of trees, so smaller is easier to find a site for. I just managed to creatively squeeze our team's 6 berth tent into the trees around the picnic site that is the main camp, but it was more by luck than anything else.
I reckon the best approach would be to think 'New Age Traveller' creative for stringing up tarps etc amongst several smaller tents.