Sometimes I, father 44 yo, bring my little one (2yo) in the park close by home (I live in Amsterdam). I was impressed by the fact there is no interactions among parents of the kids (e.g. I interact with another father). I do not talk about creepy situations where the interaction should be between parents of opposite sex, but I say that fathers (or mothers) do not talk to each other. I am not claiming there should be a law where parents who do not know each other are forced to talk, but I believe it is a bit un-natural...
Same situation at the kinderopvang: Kids' parents do not talk to each other. I have the feeling they pretend not to see the others... but then this becomes ridiculous when kids meet and greet each other outside the kinderopvang and parents pretend they do not know what happens...
So long story short what is the etiquette for parents in kinder parks?