1) I'm sorry you've somehow ended up in AU 2) Even if you do activate it, the game is PLAGUED by bugs and constant crashes so don't rush to activate it just yet.
(Not here to join in the flame wars. I just want to check out my purchase, bugs and crashes don't bother me personally as I don't care about the game, just the engine.)
You probably can't activate till the 7th - it was the 7th for New Zealand anyway (when I checked for buying it on Steam, which should indicate when you can activate it also), and you guys are probably same as us.
From here : https://support.steampowered.com/kb_article.php?ref=9151-ROKN-2810
"Important:
Please review the Third-Party Game Support topic to determine whether your question should be directed to the game developer or to Steam Support. Sending a support request to the wrong party may result in a delay in processing your request. Note:
Retail CD-Keys for this game cannot be registered through Steam. If you wish to create a shortcut to this game under your Library... etc etc"
I specifically asked EBGames support about the serial key syntax (XXXXX-XXXXX-XXXXX) - they said nothing! derp. (probably didn't know what I was talking about...)