> I would estimate 25 minutes for them to get from the one side of the bridge to their seats in the concert hall, and if this concert hall is like most of the ones I've been to, the doors will be locked about 2 minutes before they make it (lock as soon as the concert starts) and they won't get to see the show anyway.
>
> -Ka"Interesting problem though"z!

Thanks to everyone that did that! I was stuck :) And by the way, Kaz, They won't be going to seats - U2 are a pretty big band and would be the ones playing...!