It's really great that you're playing Wembley! But it's too bad that my students from Germany will be unable to visit the stadium like we'd planned a year ago because you don't want to have visiting groups there since you're sound checking in the afternoon. The kids were really looking forward to this. We don't know if it was you or the stadium that cancelled. It's not everyday we or the kids get to come to the UK but now we have a wasted day because of this. The people from the stadium said it was you that requested this. Is it really that much of an inconvenience?
Here's my email, maybe you or someone can contact me, I would really appreciate it.