In a 'child-friendly' restaurant that had a play-area a couple of years ago, I saw a waitress trip over a pair of discarded shoes, drop her pile of plates, and knock her front tooth out on a table as she fell. All because the parents allowed the child to leave their shoes and socks in the middle of the floor while they ran off to play in the ball-pit.
The play area has now been removed, and bloody good riddance.
Whilst I was on holiday last December, my friend and I commented on how well behaved all the children were.
None of them were English