If your luggage is lost or misplaced by the airline, it is the responsibility of the airline to find and return it.
You need to submit a lost luggage report to the airline while you are still at the airport.
The address you want it delivered to is:
Ivory’s Rock Conventions and Events
310 Mt Flinders Road
Peak Crossing
Queensland 4306
Australia
Please notify Reception that you are waiting for luggage to be delivered.