My experience in the past week:
LHR - met at the kerb by two hosts, one for my luggage, one for me, and they asked if I needed assistance getting to the lounge (I couldn't bring myself to tell them my thoughts on the QF lounge there)
SIN x 2 - no recognition whatsoever at the lounge door, I wasn't even told about the reserved area. The shower attendant has recognised me lately and gives me a nice shower, but I think that has more to with the amount of time I spend in the shower than my status!
SYD - nothing, even Nestor checked my boarding pass, when I thought he knew me. At one point in the restaurant, nothing I did could attract any attention. I had to walk up to a waiter and ask to order
But in the past, I've been walked to/from the aircraft, to a table in the lounge, etc. in all three lounges above, also in MEL and DXB. I've also had gate agents remember me by name between trips, which is a bit scary. I wondered at one point if they'd added photos to the iPads, but I suspect it's more that some people have really good name recognition abilities.
My advice is don't get used to it, or you'll be sorely disappointed the next time when you expect something and it doesn't happen.