My xp has our ds for two nights a week, on night one he is unable to collect from school when it finishes (a common problem for all parents who work) on night two he can leave work early & collects when school finishes. The school has good afterschool facilities which I use when I am working after school hours. Despite our legal contract confirming our agreement to the overnight stays, because it does not define the pick up time he thinks he can make up different rules & pick up times for each night to suit him & that I should pay for this. If you have had the same experience & can offer any constructive advice I would really appreciate it