Qantas is spelt as I have spelt it.
Re getting the jumpseat for the t/off etc, you may want to try posting in the Dunnunda forum. I have been lucky re flight deck visits. I don't know how you'll go with the upgrade, best hope that you have been contacted by the captain of that flight.
However, before you post in Dunnunda, it is a good idea to get the company's name right.
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reddo...feral animal!