Hopefully you'll end up with a good crew and have a great experience! OOL-MEL is a longer route, so I think you get a bit more than on the hour long flight.
Second the lounge in OOL, it's a sanctuary compared to the usually riotous food court / departure lounge / gladiator arena downstairs. The MEL one is landside but they call your flight when boarding, and priority screening was working pretty well at the time.
Enjoy!
