Concert Etiquette (and another little question)

[omably]

Hello All!

So... it may hopefully be a reality that I may be allowed to go to Hikki's next concert tour (YAYYAYYY!!!!) And I was just wondering, is there any sort of etiquette (did I spell that right) during a concert seeing as I have never been to one before especially not one in Japan (if it's there) So yeah... is there any kind of concert etiquette in Japan or anywhere else for that matter?

And.. I'm in Melbourne for two weeks for the holidays! (YAY) I hope to go to that yellow curtain shop on Bourke street you keep talking about!

ALSO!!! Does anyone know if any of Hikki's earlier singles come in 8cm format, and if so, which ones?

THANKS IN ADVANCE EVERYONE!!~