I'm getting a sense of a great idea in the making...
However, I have not been able to find much in the way of aviation themed beer. The only Aussie beer I have found so far with an aviation theme is
Extra Tiger Stout
(Alas, it hasn't been made for over 100 years, but these are just details).
What about this as a thought...
Make Your Own Beer
Just down the road (for you guys, at least), and you can add your own PCDU label. They reckon they've got 100 different flavours to choose from, so some research might be required. Unfortunately, Steve, I do not see a Nescafe flavoured variety. Financial contributions from all attendees and you could be onto a revenue-neutral, brain in neutral good thing.
Bet the APG boys don't have their own beer label!