I got there at about 7 in the morning and didn't go back until about 6 - my friend had a ticket she had to pick up at will call, but because it was under "the band," she couldn't pick it up until then.
We were a little antsy, because she didn't know whose name her ticket was under, so it was a huge relief when she came running back over to me waving her ticket in the air. The lady at will call earlier was all "I can't find your name here - are you sure it isn't reserved under the band's tickets?" My friend and I were all ".... uh ..... I don't know!"
(When Bono had come around our office the previous fall, her boss had met their tour manager or something, and he was able to get her a ticket, so it was indeed under "the band"!)
A lot of people were dumping their umbrellas in this pile before going in - funnily enough, most of them appeared to still be there on the way out, so I guess that worked out well for most people.
/cool story bro