Certainly the Docklands stadium was built to ensure pre-booking is generally necessary.

The sole ticketing agent for that stadium is here: www.ticketmaster.com.au

For direct booking for that football game, use this link:
http://www.ticketmaster.com.au/event...1/default.aspx

Note the appears to only be General admission tickets left for this game.

(It appears you must use IE for this website.)