Hi Ben,
I only got back from Tamworth recently and had a great time over there with a good group of guys.
To add to what Like This Do That said, be yourself and don't BS to the board - these guys are experts at detecting it. They will put you under pressure and how you react to it will be more important than providing any 'right' answer in many situations. Of course common sense prevails.
Also ask yourself if you really want to be an ADF pilot and an officer, along with what this entails (working away from home for long periods of time, getting shot at, killing people and breaking things etc.) If not then they will probably recommend flying for QANTAS. And if you're married make sure you and your better half understand what this choice of lifestyle entails.
And finally - the Navy (and Army) are pushing hard for pilots, so I'd suggest reading up on choppers if you would consider this option. Otherwise you lose 2/3 of the chances of entering the ADF as a pilot.
Regards,
Formski (waiting for an offer now...)