BARRY, we did QM2, Sydney to HK in 2017. Loved the ship, it is unique, food, service and entertainment good. But all too formal for me I am afraid. Wearing tuxes, jackets and ties is long in my past. My late wife loved dressing up but I never did.
I think being in Australian Waters you will see a few Aussies in their t shirts, shorts and thongs testing the dress codes and getting chucked out of the Crows Nest at the bewitching hour 6pm. As you know Cunard are also strict on dress codes into Britannia MDR.
Enjoy QE.