Changed the title as it wasn’t clear
I don’t really get the question. How do we “manage” it? In what way, what aspect(s)?
From parents I know, it can be a bit challenging, especially if they are too small to be left to themselves.
If on vacation, and a parent to small children, I’m going to assume any responsible parent will not leave their children alone whatsoever, unless the children are asleep in a safe place.
It’s “challenging” as much as the rest of the year when not on vacation, in my opinion.
Maybe I’m still misunderstanding or missing something.
Summer vacation = kids not at school during the day, i.e. unsupervised during work hours.