69,
Mascot sparsly populated.............. you ever looked at a map of Syd and where KSA is?
Maybe when Captain Cook sailed HMS Endeavour it was.
Airports all around the world have curfews for a lot of reasons, some good some bad, but never the less they are there and Airlines know about them and adhere to the restriction. (most)
Got fined..... tough, not the first, not the last.