If you arrive and fly around in a foreign registered aircraft you don't need to go thru any of the bull****, no AVID or ASIC, no disabling device for the aircraft. I know of people who have done it.
Only applies Aussie licenced pilots and Aussie registered aircraft. Talk about shafting your own people.
Just to add to what CFI mentioned when she says that no AVID or ASIC is required by law if you don't have an Aussie licence. I heard that you don't need one at a security airport either (they cannot insist you have one since you don't have an Aussie licence) BUT it does help to have one, however if you can't get it organised in time some sort of ID i.e. passport will usually suffice.