I just don't get it. How could any parent invite one of their biological children, not the other? How does that thought process go? 'What about... DS1... nah'
I could never ever imagine forgetting to invite my child or thinking about booking one child place and not even giving a second thought to enquiring with the other parent.
I get kid free holidays completely. But choosing to only be a parent to one child for the week when you have a seven year old at home is just bizarre.
Can any parents explain why this is ever thought to be ok?