It strikes me as discrimination that even if there is no underwing camping allowed there will still be a fee levied on aircraft and the people on board visiting the races by air.
I have to ask the question is the council going to set up road blocks and charge all motoring visitors a fee to enter Birdsville for the race weekend?
If there is concern by the council about security and rubbish on the airport as the reason for no underwing camping but still a fee for airborne visitors, then there should be a fee charged and paid for by all the motoring visitors descending on Birdsville for that weekend.
History would record from past Birdsville race gatherings that the influx of motoring visitors would leave more rubbish and be a greater security concern than any airborne visitors. .
There is no valid reason to have one rule for one and a different rule for others.