Definitely some of my waitressing jobs.
The first one was at a hotel one Summer break, where they regularly used to run out of everything (coffee cups, teaspoons, you name it...)
I ended up going back there the next Summer (didn't have much choice of jobs) but unexpectedly got asked to go on the bar instead. I was just 18, fairly innocent, didn't even know what most of the drinks were - my "training" was one evening working with another girl, then the next night I had the bar on my own... very embarrassing to get asked for drinks and have noooo idea how to make them.
Worse, I would end up doing 12-13 hour shifts with no breaks as I wasn't allowed to leave the bar unattended and the managers never came by - had to sneak off and put the shutters down every time I needed to pee, and in theory wasn't allowed to eat or drink behind the bar either so I had to hide round the corner sipping iced water to stop my stomach rumbling.
Also they still had the running-out-of-everything habit, one memorable evening my bar had NO coke, NO ice (the ice machine stopped working if anyone took out the last layer of ice), NO change as the managers forgot to go to the bank - and eventually NO beer whatsoever, as I wasn't allowed the cellar key to change the barrels, and could never find a manager to change them when they were empty (never mind I wasn't supposed to leave the bar to go looking for them....). Can you imagine the stick I got from the customers?
There was also the silver service job, in particular one wedding where most of the men seemed to be raging alkies and pretty much stormed the bar, shouting at us for not giving out beers fast enough, but then we got horrible abuse if they even thought we were offering drinks to any of the women (some religious thing I think, though I never worked out quite what religion - they obviously thought it bad for women to drink but OK for men to be drunk, leering horrors)... then one of the men cornered me and my mate out the back and was offering me "twenty pound, two men, you go, yes?". Nice....