Cheers mate.
After the game...a great pub to go to is the Corner Hotel - its just up Swan St from the Olympic Park (near Richmond Station) - its a fairly iconic pub where U2 recently filmed a single on the rooftop terrace.
Though its fairly grungy. As you head up Swan St there are plenty of great pubs. The best ones are the Swan, the Public House (both on the corner of Swan and Church St), and the London (on Lennox St, which runs of Swan). Otherwise, head back into the CBD, and head to Transport Bar at Federation Square.
Welcome to Melbourne - you'll have a great time.