This makes me curious about the Japanese etiquette for challenging in the arcade. What's it like? Would I get the gaijin treatment for challenging and beating someone who appears to be a beginner? Are you supposed to ask before challenging?
I generally do two things regardless lol:
1.)Watch the opponent. If he doesn't look like a scrub, then:
2.)Ask if I can challenge him/her.
Of course, if he's a friend, then all bets are off.
The same kinda applies when I play Max Tune, except I make a very special exception for fishers (people who race severely underpowered cars just to add to their win count) and just go in and put him in his place. Sadly, I'm not that good that I would make that exception in MB, lol.
Unfortunately, these challenge messages won't mean a thing to me, since I can't read Moon.