I would have also declined also. I used to LOVE going to concerts. Obviously for the reason to have an “acceptable excuse” to drink as much as I wanted without getting judged. Sober me hates crowds and drunk people. I’ve chosen to stay away from those events. Not because i would be afraid I would drink but just because it doesn’t sound fun to me anymore. Some people love going to concerts sober. I’m not one of them and I’m perfectly fine with that.