Shit...I meant camping NOT allowed. But it has happened either formally or informally at every other venue I've been to this tour.
Anyways... I was passing Don Valley today and had a look around. Although there was football on, non of the security guys were able to tell me much other than that camping would not be allowed within grounds of the stadium. Nor could they tell me which entrance/s would be used for GA (my ticket doesn't have a gate). My guess would be gates C-K - there's quite a wide open area there but I think that's part of the grounds. However there's a good walkway leading up from gates C-M, passed gate N and beyond towards the tram station. I don't think that's officially part of the grounds and is narrow enough to form some orderly queue with a numbering system. I'm gonna call the security guys on Monday to see what kind of support we can get.
I'm happy to organise this one, but I won't be arriving until Wednesday afternoon as I need to get back from Glasgow.