People will be playing at a reasonable volume, and then some blues guy always comes and plays loud as fuck on his neck pickup with the tone turned way down.
Every single time I go, this happens. And it's always the blues guys. The metal guys always play relatively quietly.
Generally a blues guy is playing a fender or something that NEEDS to be cranked up to do its thing, even worse than metal amps.
I dunno what the hell is going on where you live though, usually the blues guys around tucson at least wont go to guitar center because the widdley kids chase them away with awful highvolume badshred