You might want to wear shorts and tshirts guys. There is no air conditioning. And if you have ticket stubs or flyers (grab the flyers in the Q!) you will need them to fan yourselves. Not joking!
I've been to hotter gigs and in a mosh but I was younger, it was more discomfort of sweat rolling down body parts than anything else for me. Just take water and regularly drink some (to jealous looks around you) , the toilets are in the basement ie go down before you go up um...oo- er.
"Read my posts and see why we`re not allowed nice things anymore" "Brought to you straight from the People`s Republic of There`s Something Wrong With You . The Hoi Polloi Capital of the World"
Alison on Twitter adviced us to come sans clothing - I'm not going inflict my nudity onto the public, but I'd quite like see some of the guys I saw at the gig yesterday in speedos or without! :D