An old thread, I know, but I thought I'd add to the discussion.
I went WP for the first time ever in the last fortnight. My first flight was QF799 CNS-BNE on 16-Jan. I was seated in the emergency exit row aisle seat (13D), and the cabin manager came up, passenger manifest in hand, and welcomed me by name, indicated that he knew that I flew a lot with Qantas, and thanked me for flying with Qantas. He asked if he could offer me anything, such as a newspaper, which I declined.
I had no idea that this was coming or was provided. Was a bit embarrassed at first, and then a bit chuffed, and then a bit more embarrassed wondering whether this might happen on every flight QF flight I get onto now.
The crew was a CNS-based crew on that flight.
Not to worry though. Got on QF799 again this morning, again a CNS-based crew, and didn't get a greeting or anything all flight. Phew.
Out of curiosity, I jumped on AFF to find out what I should be expecting. Looks like I could expect a greeting every now and again, but not to be surprised if nothing happens at all. Perhaps it's "expect the unexpected"!