So the rumour is true then.
Did you ever look at the state of the tents next to the, erm, honey buckets at a festival, and wonder "Just why in the fuck did you pitch the tent THERE? Did you think 'It'll be a great idea cos I won't have to walk far to the toilet'?" No, it'll be a terrible idea cos you'll get your tent covered in dust/mud (remove one option depending on weather) and then you'll get the Shit Van parked about three feet from your face twice a day, rabidly sucking the mixed faeces out of a dozen chemical tanks.
Never will I camp next to a portaloo. I was close enough at Reading 2003 and it fully stank. We did manage to take out the security guard on the wooden tower with an apple though.