re: filming
I don't know if anyone else noticed, but right after the GA line opened up at Denver II, there was a guy inside the ellipse with a lady. He stayed for a few minutes talking with her, pointing at the stage and looking around the arena, etc., before leaving the ellipse. My first thought was that the guy looked like Phil Joanou, or my distant memory of Phil Joanou.
Now, I haven't seen Rattle and Hum or footage of Phil in years, and he was 17-18 years younger than now, but that was my impression. I let others around me know about this, but nobody knew who PJ is, so I couldn't get a second opinion. I'm not trying to start any rumor - he could have been anyone with the U2 entourage who I've seen photos of. He just looked familiar enough to shake me.