Every place has it’s unwritten rules and norms. These are rules you have to follow or it will be hysteria all around. These rules you sometimes don’t think about. Or you never think about them. In Sweden we have all these “polite” rules.
For example swedish people would never think of not standing politely in line in grocery stores and everywhere else. We stand there and would never “cut the line” no matter what. If someone would cross that rule and not wait in line many wouldn’t say anything because we’re too polite! We think things but we don’t say them.
There’s one thing that drives me crazy but because I’m swedish I don’t say anything. Sometimes one of the local grocery stores has “member days” where members get discounts on groceries. On these days every retired person with a walking chair invade the store. I like elderly people but these I can’t take. On member days they behave like they buy all groceries they’ll need for the rest of the year. Their walking chairs are packed with all items that are discounted. What drives me crazy is that there are walking chairs everywhere. They block every inch and you can’t get to the groceries. I want to say a lot but I wait forever instead until the walking chair has another grocery on it and disappears.