Expectation aside, aome may perceive it as whiny assholes, but honestly if you've never worked F&B how would you learn these things?

Why do people think that when I'm in front of the POS its great time to ask me something or give me a drink order (especially when I haven't made eye contact)? Because they think I'm just standing there not doing anything because I don't have money/card in hand. In reality I'm adding rounds to tabs, splitting checks, auth'ing larger credit/debt limits and etc.

Why do customers try to one-drink-(at a time) me? Because they need some time to figure out what they want and aren't concerned about the other customers in the bar. In reality I'm working sets of drinks, knowing the complete order let's me know what I got to make and lets me work the set efficiently.

Sorta like how people think they can just jump into bartending part time on the weekends with no experience because "how hard can bartending be?"

You never see lists like this from accountants or garbage men or fucking arborists.

Never seen any of those services deal with more than one customer at a time. apples and oranges. First couple if you don't do it their way you don't get their sevice. Don't have the receipts or paperwork, no accounting. Don't have the waste in proper containers in the proper spot by the proper time you get to keep it until the next pick-up.