#17: Bartender
Bartenders, or mixologists, have long held the misconception of being free therapists. It might be true to some degree, but you probably don’t know that their jobs require them to measure accurately. Not only are they following a precise recipe, but they also have to account for all the alcohol they use during a shift.

You can totally order your drink in a tall glass or without ice, but that doesn’t necessarily mean you’ll get more alcohol. A pro tip from a bartender: If you want to upgrade your drink’s potency, you’ll have to ask for an extra shot to be thrown in the mix. Then, you’ll be charged accordingly. Don’t forget to tip!