best way to figure out what someone would like is to ask them what their fave taste is. do they like sweet, tart/sour, etc? never ask if they like strong drinks cos they'll always say yes and they are not always right. also, for the most part, people have a favorite liquor and like things made with that. i dunno these are just things i learned from catering to people that come over.
realistically speaking people are going to get the same drinks over and over again. you're not going to need to know half the stuff you learned.
concurred. people have a drink they like and they stick with it. something from the bar at my restaurant is that every woman in jersey is in love with martini's. every type of them. and cosmos. so as long as you got those two down and you're working here, youll be fine.