NB: Just read on the German U2 board that ALL entrances will be open for GA, but E1 and E2 are the ones where you have to run the longest because you have to pass the east tribune,that means the run leads almost around the whole stadium. E 3, 4, 5 are the ones where you have to run far as well, but not as far, so these will be more crowded. E3 should be the best one, so I expect most people there.
But people over at u2tour.de are already saying that all of this info doesn't necessarily mean anything because they've had different experiences with different concerts at the Commerzbank Arena. It's never handled as it should be. That's why I'm saying it's not necessary to queue up in the morning, because there will ALWAYS be chaos when the gates are opened and you will end up standing beside someone who just arrived at 5 in the evening. I've heard from people who queued up at 6 in the morning and I ended up standing next to them despite arriving in the afternoon.
When the gates open, it's always chaos. There is no system that really works.