I'm afraid that even a quiet word with the children, to some parents would mean a complaint to management and either a disciplinary or even loss of a job as a result.
Yes it is the parent's responsibility, but is it the staff's responsibility to stand in for the parent?
Why is it that we will sit back and moan when children misbehave in places like hotels and restaurants and not say anything, but expect the staff (and it definitely won't be in their job description) to be the ones to say something ? They have enough to tend to.
60p for visits to the toilet !
