"I pay your wages!"
Aye, but not in isolation, alongside the other customers spending their money here that you're holding up having your little tantrum, and actually you don't, the company (who set the policy I'm adhering to and you're complaining about) do and they have the power to stop paying my wages for not adhering to said policy, so funnily enough, it's them I'm going to listen to when they tell me to do something, and shouting at me, calling me names or threatening to wait for me outside and 'sort me out' still isn't going to change that.
And the licencing law experts -
"The law says I can give my child alcohol over 5 years old if I want to, so you have to serve my 15 year old a double vodka and coke!"
Nope. Only certain drinks, which don't include spirits with a table meal and then only 16/17 years old. And no, a bag of crisps isn't a table meal. But keep shouting, I'm sure the law will change if you do.
Best one though was a customer when I worked in a paper shop, opened at 6 and it was 5.30 and I was sorting the newspapers for the day and putting them out.
"Are you open"
"No sorry, we open at 6"
"But you've got the lights on!"
Uh yeah, I kind of need to see what I'm doing!