Weird to have a son who plays no part in this
As a kid, I always looked out for fellow kids in movies. Sort of like "representation" and wanting to be involved in the story, or see things from a kids point of view.
But the boy has no connection to his dad, leaves for a holiday and then plays no role in the story unfolding...what?!?!
Why write in a non-event son?
If they wanted to establish him as a suburban dad and have no kid involved, write it as a teenage daughter who takes off for the weekend.
There, dad status achieved.