One thing I noticed prior to walking into the arena were the rules regarding prohibited items. There were the usual things that made sense. No weapons or outside beverages/snacks or explosives. No animals (excluding service animals, of course) or illegal drugs, etc.
One stuck out: no video cameras or recording devices.
Huh? Nearly every person in the building has a video camera/recording device. It's called . . . a cell phone.
The very first concert I went to was Motley Crue in Winnipeg, Manitoba. In order to get inside, everyone was patted down. I had a retainer case (I had recently gotten my braces off) in my front pocket and the security guard pointed at it and demanded to know what that was. So I showed him. Nothing nefarious at all. There were similar signs regarding recording equipment. Not long later, I did obtain a bootleg copy of the same Crue concert that happened a few nights before. I don't know the story behind it, but it was interesting that it was still recorded.
A few nights after the Kenny concert, we went to another concert at a local casino. I noticed the same signs about recording equipment. I pointed it out to my girlfriend. We chuckled, and commented that everyone in the place has one of those in their pocket.
Some rules are fine.
Others . . . for the love of God, eliminate them.