I've seen both sides....back in the 1980s, I did an internship with British Caledonian (Those were the days, I spent ages HAND-WRITING baggage tags all day long...), I had loads of "fun" with obnoxious pax even before they boarded their flights....after that experience, I definitely didn't want to work at check-in anymore (It was some kind of school-sponsored internship, I was only 15 at the time).
But during the last few years, I have been telling off people quite often, for the above-mentioned reasons....queue-jumping oh-so-important idiots, inconsiderate
s not wearing seat belts, being nasty to f/as, and my favourite: The Annoyed Pax Whose Flight Got Cancelled Who Declares It's The Check-in Desk's Fault. God, I *love* those....
