I have tickets in these sections and want to know how well you can see the stage and how well you can hear the music. Any help would be great.

I haven't sat there for Coldplay, but I have for U2, and the seats weren't bad at all. I know at the ACC they have this thing where there is not one seat in the arena that gives an obstructed view, so you'll be able to see the band fine. The only thing you'll miss out on is the effects from lighting and what not, because you won't have a view facing the front of the stage. As for hearing, U2 was fine, and actually I had friends who sat on the opposite end of the stage in club seats who said they couldn't hear as good as they would have liked.

 

Anyway, we're in the same boat, I'm sitting in 319 for the Wednesday show.