Alex,
I don't know the setup at Tullamarine but here in Perth I took the transceiver and some Terminal Area Charts up to the observation deck at the international terminal. You may look like a tool (and security might wonder what the hell you are doing... especially if you have charts out) but it's worth it. Maybe look at getting some headphones.
Others may question why you would need to go to the airport as the majority of the work is outside of Tower's 5 nm circle. You'll hear the clearance requests, Taxi calls etc whilst looking at a real living breathing machine; it will really bring everything together... as long as you combine that with proper study and don't just go up there to watch shiny jets and look the part.
FRQ CB