Well, as a gold member, when taking Y or Y+, most of time I got greeting from SP. Once on a Y flight from CDG to HKG, every crew called me Mr. XX from begin to end, no joking! When ordering meal, one crew called me Mr.XX. during the flight, I went to galley for water, another crew still called me Mr. XX, amazing! However, in J class, nothing! No greeting and most crew didn't know my name.