I received one of these special greetings by the CSM after boarding a SIN-SYD flight late last year. I was a bit surprised as I am an SG. Though there was a good reason.
As I approached my J seat on the upper deck forward section, one of the cabin crew approached me and asked "Mr Yada Yada?". "Yes" I responded. Your seat is next to a parent with a small infant and there is another parent and small child in the row in front of you. We thought you might prefer to be relocated to another seat that is a bit quieter. I agreed.
My new seat was on the opposite side in the rear section of the upper deck. A few minutes after settling in, the CSM approached me and said "Mr Bloggs?". "No" I said, "my name is Mr Yada Yada". She referred back to her list and looked rather perplexed."They've just moved me to this seat because the other one was going to be a bit noisy" as I motioned to the front section. "Ah" she said. Referring to her list again. "Mr Yada Yada... yes, there you are... you are QFF Gold, OW Sapphire. We'd like to welcome you aboard and thank you for flying QF etc etc." And off she goes.
I was a bit surprised by all of this but then realised that I was occupying Mr Bloggs' seat and he was most likely a WP, thus the reason for the visit. He had probably been moved downstairs to F, lucky blighter! Anyway, full marks to QF for pre-empting the problem. It certainly made the flight a bit nicer because the kids made a racket at various times.