I mystery shop a few mid to high end restaurants. I am always amused at how the servers *think* they know who the shoppers are. One time I overheard them discussing the diners right next to my husband and I. Somehow they had been alerted to the date that month (not supposed to happen, but sometimes it does) and were convinced this couple were the ones based on few very erroneous assumptions! The entire night they hovered over the other couple practically ignoring us. I'm sure management was not thrilled with my report!
(PS please don't bombard me with questions about how to get this job, I know you would all love a couple of free $150-200 dinners every month, suffice it to say I paid my dues over the years at some not so high end places and am now reaping the rewards!)