Presumably it is acceptable for staff travel to occur whilst in uniform?
Even if they rebooked you on another international flight that day? It would seem strange to me having to clear immigration collect bags, check in for your rebooked flight, clear immigration and security again. Surely in those instances you can stay airside and board your new flight.
Now there is a grey area I concede where you are in the international zone but no longer hold a confirmed flight. In some countries like Singapore it’s an offence:
However, this is Australian and not Singapore and people tend to be more laid back when it comes to things like this. Certainly if you were occupying the transit area overnight a-la
Mehran Karimi Nasseri then there may be an objection. But if you’re there for an hour or two particularly if you might be able to secure a new flight who would raise such a concern?
Just to clarify, I am not suggesting in any way a fee for no service. I think it goes without saying that’s highly unethical behaviour. Instead, what I am suggesting is providing some chocolate to a gate agent after you receive the seat. In that way it is fee for service which doesn’t influence their decision making (as they weren’t aware of the gift before hand)