Had ds party today in a small play place. One of the party, girl of 4, wees in the ball pool, obviously an accident. We tell the owner straight away and they promptly announce that nobody is to go in the ball pool. Anyway, they want the parent responsible to pay £100 (which is what they say it costs) to clean it. We were made to feel really bad for the rest of the party and it really spoil it for me (not the children though!). Do you think this is right, they should pay or not?