*sigh*... thinking I might try to get myself to PAX this year, after not really thinking about going.
Good luck. I think tickets are mostly sold out, unless you keep an eye on their Facebook page for people selling.
I was down in Melbourne last night for an awards night, which happened to be at the convention center, which I haven't been to for years, and has been expanded since I was last there. All I can say is holy crap PAX is gonna be massive.