I'm a bit worried I may appear to be a bit of a pykie with this... but I've never had any real complaints about the camping facilities...
KN in '02, the loos were fine and the showers were warm, just a bit of a queue in the morning.
HA in '03, the loos were again fine, if a little cramped... no room for a broadsheet, but clean anough. And the showers were hot and powerful, with an expected queue at the usual times.
Now I don't like to think I have poor standards, but perhaps the quality of attendee is a little higher in these camp sites and hence the facilities are treated with more respect??

Can't speak for MB though...
