Originally Posted by Sanitarium78
Well, if there was a fine it really doesn't make much sense since the arena is located downtown. There are no residential areas near by and even if there were you probably couldn't hear much if anything at all outside of the arena.
If there is a city/town/neighborhood curfew, it wouldn't be because of noise coming from inside the arena. It would be because a crowd of 10,000+ people leaving the arena after the event can be quite disruptive to the surrounding areas.
But since you said the arena is located downtown, it's probably more likely to be a union issue. I know both Radio City Music Hall and Madison Square Garden in New York City have strict 11pm curfews due to unions.