yeah, that's about right. The thing is, it completely depends on security at the particular arena and the area that they pull into.
for example, in Atlanta at Phillips.. it runs under the arena.. so you can go down to the bottom level parking lot.. but security was always running us off.. for no reason.
in Lexington it was the same, under the arena.. but there just happened to be a road that the GA line was forming up against that was another blocked off (gated) entrance to under the arena.. so when they pulled in, Bono saw us up there and just walked up to say hey.
in Baltimore, it was more of an ideal situation, b/c the Baltimore Arena is really kind of old.. (there weren't even seats behind the stage, it was a small place" and because of that, the area they load in was rather open and easy for everyone to notice.. you almost couldn't NOT notice it.
it was just a big parking lot next to the left side of the arena.. so they just decided to come out and sign autographs (the lot had been gated off).
its just that some of the newer arenas have like underground garages and it's not that easy... b/c they can just drive in and wont come out at all..
so it sort of depends on the venue.