Anyone with experience working in a popcorn stand?

A few years a go I visited some friends in the US and along the way I fell in love with many of the popcorn places that I visited. I grew up only knowing shitty movie theater popcorn which, besides overpriced as hell, is sweet-ish, salty if you're insane and that's it.

There are absolutely no popcorn places where I live and whenever I do an event I'd like to make some interesting flavours of popcorn, but I have no resources on how to start, the only online 'recipes' are these chatgpt recipes that look good on paper but are terrible in execution and don't work at scale.

So my question is, has anyone worked in a popcorn place? What does the process look like? How do you add those odd flavours such as peanut butter apple, etc. Any help is appreciated because I live in an absolute popcorn desert.