I was at a foster care house for a while and the foster carer and her son both got really, really, really angry at me for not holding a knife and fork right (I held a knife in my left hand and more like a broomstick despite being right handed), but neither of them wanted to teach me or explain what the go was. I only learnt how to properly hold cutlery and knives when I was 14/15. My previous fanciest dinner would probably have been an RSL, but since those tables aren’t really shared, nobody gives much of a shot how you eat things as long as you’re not obnoxious about it and meet their dress code thing.

I’ve actually picked up a lot of my manners and social norms from old Australian soap operas (namely prisoner) + stories from my mum. Just generally speaking, I don’t think much beyond basic manners is really a thing in my generation. Even an expensive sit down restaurant doesn’t necessarily mean it’s fancy or will even have a dress code, let alone any concern about manners or over a dozen types of silverware