Its a fun trip to make with your mates, if you have any other pilot mates get them to take aircraft up as well!
As for sleeping arrangements, a tent and sleeping bags with a li-lo would be the best space saving option, its what we did, though must admit they didnt really get used...
Cant say i remember there being a hell of a lot of rocks we couldnt kick out of the way either.
If you dont want to line up for a shower, have one at 3 or 4 in the morning "before" you go to bed! No one around at all to complain how long you take either!
Have fun!
Turbz