Ruby's does have a security guard ("the keeper".) And of course it matters where the guy works because it will help eventually figure out who he is. Sounds quite strange and probably a little more to the story than we have been told. The police can't really do much when you don't know who the guy is, you think you might know where he works, and he didn't actually do anything except call your name at 4am. If that is all it takes to get people off the street 25% of the party crowd in San Pedro would be locked up every saturday night!