Don't forget yourself.
If you haven't moved recently it can be far more disturbing than you think. Second only to bereavement is the recieved wisdom. The longer settled you were, the worse it gets. For you &/or the other family.
Have your friends primed and there is always the Mudcat (notwithstanding Max's post).
Maybe the other family prevent this by their presence, or make it more noticeable.
"Rules of engagement" are a good idea.