Yeah, I was thinking about that too. I'll definitely be standing there with my fingers crossed as they hit the stage. It would almost make perfect sense that they do everything else right, but Bono's voice is shot.
The good thing is that the schedule is at least 24hrs better than it would have been last year. Last year they would have literally been flying 'red eye' style overnight immediately after a gig, or over on the same day, touching down in London or wherever and needing to chopper straight to Somerset there and then. Either way, madness.
But I think it's better mid-tour than isolated. When they do isolated gigs outside of a tour, that's when his voice is normally pretty shit. Really, there's only one gig a couple of days before, and that's the only gig that week. It's not that punishing, plus that gig is in Baltimore. No offence to anyone from that part of the world, but... he can cruise that one.