my guess is that all tickets were general addmission
and if you wanted to get a good close view you had to turn up as soon as they opened up the gates to enter or whatever
I was there on the first date. It was GA and I was very near the gate at 9.00 a.m. but the orange stripes that gave admission in the heart in front of the stage were assigned earlier in the morning... ...so I had to choose between a wet standing place under the mixing consolle or a quieter relaxing place at the right of the stage, just under the castle.
Plain beautiful... ...a very heartfelt performace by Bono and his mates and a super version of One with the late Bob Hewson (R.I.P.) on the mega screens above the stage... ...very very touching!