haha I worked as a cabin crew before. There is always a cargo manifest on every flight, and every crew member working in first class checks the names and should use the passenger's name when interacting with him/her...

Perhaps other airlines aren't as strict as Singapore Airlines, but I would have thought that the industry standard for service on the first class level at least should be similar.. I find it difficult to imagine what kind of sloppy habits the crew working in the first class cabin on that flight had loll..or maybe they just liked your face, and you got very lucky hehe