When you look at how the system works, very unlikely to get op ups. QF despite all compliants runs high yields, and most flights from AU are relatively long haul - with high demand for J seats.
Then coupled with the ocean of points available from toasters, wine, steps, insurance, credit card sign up bonuses etc creates a high demand for those seats.
Next add in that QF openly admit they do not release many reward seats and rely on partners, coupled with their upgrade lottery that is all based on who is utilising those ocean of points for a chance of upgrades (fulfilled from +7 days out progressively). And the aggressive use of Bid now upgrades - you have a massive demand for what is probably about 5-6 seats left over.
And the regulatory framework of where QF openly states they do not sell seats but a right to a flight at some stage, and you have no regulatory disincentive to not oversell the higher cabins.
All that creates an environment where op ups are rare, and overbooking is solved often by denying flights and rebooking rather than reaccomodating people in higher cabins. As there is no space in the higher cabin anyway.
And domestically, small J cabins so demand is solved by int connections, public service travel policy and the upgrades by people who are sitting on a lake of points but due to low or no status have realsed their chance of an upgrade on international is nill.
I have not had an op up ever on QF.
KF