Good luck getting anything out of them. Qantas are incredibly tight-fisted. I've found even JQ seem more willing to offer compensation than QF.
I flew BNE-SYD-CNB the night before so I could be fresh and ready for an important morning meeting at parliament house. They mislaid my baggage and they eventually (and begrudgingly) gave me a first class pack so I could at least brush my teeth and wear something to bed. Service provider even told me it was my fault as I shouldn't have simply expected baggage from a connecting flight to connect. The last flight from SYD had gone by then, so couldn't get bag to me until midday the following day (my return flight was 1300). Refused to offer any compensation, even though it meant I had to faff about to find a retailer that sold suits early in the morning and had to get changed in the Canberra Centre toilets before catching a cab to the PH. Formally complained but they were incredibly unapologetic. Ended up arriving at Parl House 10mins late, flustered and sweating, and in a crumpled shirt. Could have gone very badly if the pollie hadn't been a decent bloke and found the story amusing (the meeting was to ensure continued funding of our project). Thing that annoyed me most was that I chose the (much more expensive) flight the night before - and paid for a hotel - specifically to avoid these problems, not cause them! Wrote a letter to QF about this, they acknowledged receipt but didn't even bother with a personal reply.
It was the reason that drove me to Virgin for majority of work flights. Was also the reason I finally bought a suit carry-on bag.
I was only silver then, but not a good way to treat prospective customers of any level.
Anyway, long story short - QF probably won't care. Have heard from friends in the travel industry that the days of QF compensating are pretty much gone.