Tracks and volume appropriate to the circumstances.
Loud volume in a restaurant = IMO, stupid. Who wants to go out socially as a couple or with friends and have to scream at each other to have a conversation?
In a casino at "off" hours. Equally annoying. Saturday night at 11 PM music track at Hard Rock isn't appropriate at 7:30 AM Tuesday.
If you're at a club, bar, street party, etc., all is fair game.
DB's screaming over $5 wins = not appropriate. If the casino is hard up enough to need patrons like this, you may need to revise your gaming venue options.
It's all about right time, right place and appropriate venue.
Dan