Flyerqf, re QF23D, the other issue is that assuming passengers' ultimate destination (for the majority was MEL and not SYD), how the heck does QF (even with its subsidiary JQ's flights) get travellers down from SYD to MEL tonight given that most would be unlikely to clear customs until at least 1910 hours?
Sunday night usually sees domestic flights on the SYD - MEL route full or very close to it.
Do you mean QF30D? If so I am not sure how the passengers will travel onwards to MEL. I assume that at this stage until we hear otherwise that the flight will continue on to MEL tonight.