If you really don't want to carry stuff, you've got to set everything out beforehand and really try and cut down on stuff. I mean, this year, I'm taking a tent, a sleeping bag, a pair of shorts, some tshirts and a jacket (and wellies if necessary). I know it's more difficult for girls, but you've really got to try and discriminate in terms of what to take. Surely you don't need ALL that make up?
What I intend to do, is take stuff that's disposable so at least I can bin a load of stuff when I'm leaving. The tent cost me a tenner off my mate, the sleeping bag is a crappy one from Asda and the wellies cost me 7 quid from a cheapshop down the road. I'm not cheap like! It's just it'll make it ridiculously easier on the way back, as potentially, all I'll be carrying is a backpack with a water carrier and some clothes in. I believe you can buy blow up mattresses there, but you'll either need a big set of lungs or a pump to blow it up with. My mate has a camping mat to sleep on that just rolls up, you could have a look for one of those? They hardly weigh anything. You can also get chairs there aswell, think it's 2 for 8quid or a fiver each. They WILL either break or be stolen by the sunday so be prepared to leave without them (I'll be leaving mine there anyway - unless someone robs it beforehand).