- Are the people in music stores always into metal/punk/rock/alternative music?
Yeah, I think that it's compulsory for them to have long, greasy, dyed hair and as many piercings as possible.
- When greeting another male, do men call each other 'mate', whether they're friends or not?
Within my experience 'mate' is generally reseved for when you don't like the person enough to use their name. But that's probably just me.