New York restaurateur Danny Meyer is a master of detail, and his employees are trained to notice, and when appropriate act on, even the tiniest scraps of information they observe or discover about a guest. If you happen to mention when making a reservation that it's a birthday dinner, the manager will make it a point to come to the table and extend Danny's birthday wishes to the appropriate person. If a staff member overhears a conversation in which one of the guests mentions they either like or dislike something, within minutes, everyone who might come into contact with that guest knows about it. And they tailor your food accordingly, too.
