To charge son rent if he's away for the week?

[tropicalcocktails]

Ds late 20s still lives at home but has family in another part of the country, he has just announced he's going to visit his other parent for the week.
We normally charge him a weekly contribution and at this current time money is pretty tight so we need him to contribute.
We have 2 young children who share a room as he still lives with us.
He's suddenly sprung this on us and as he now won't expect to pay his contribution next week that's money we will now have to find.

AIBU to think that as we don't have that bedroom free for our other children who share and I'll still have his washing to do and the fact he has known about this visit for weeks but didn't think he needed to tell us his plans which has now left us short he should still pay his contribution?

You're expecting him to behave like an adult and know that of course he has to keep paying for his accommodation when he's away for a few days, but treating him like a small child in every other aspect. This isn't living like a teen, this is living like a 10 year old! I might be a bit unusual in this respect but I was making my own packed lunch from about the age of 8.
It sounds like he needs a lesson in being an adult and fast.