Hi, re a domestic QF Rewards flight, I just did a complete name change and this was my experience, it was relatively easy. (Couldn't do the name change online myself, so had to call Qantas though). It seemed to be a fairly simple process, it cost me 5000 reward points to change the name. Also, I had to put my husband on the phone to talk to them briefly (as he was the original passenger, they just needed to confirm that he was happy to have his name removed from the ticket). So it would have been a pain if I had called them when he was not at home. So yeah, just confirming you can definitely do this for a domestic QF flight reward booking, (up to 24 hours before the flight I believe).