High-volume cocktail bartending requires high-efficiency multi-tasking and an abundance of patience. "I need three Sazeracs."  Got it.  That's easy. "I know it's late and it's busy, but I really want a Ramos Gin Fizz."  Crap.  OK.  At least it's just one. "What kind of martinis can you make?  Just make me something.  Not too sweet.