I have been asked to look after some children at a wedding from 4pm to midnight. There is a room for them to play, eat and sleep. I have said there would need to be 2 of us depending on number/ ages of children and I have a friend who is willing to do it with me.
There will be 2 babies but I suspect they will mostly be with their parents, 2 or 3 3 yr olds and 6 older children (8-10) who we probably won't need to look after.
I really have no idea how much to charge! What would you do?

I would be charging a set fee for that time period, most probably be charging about £250, as it will need to be split between 2 of you, but again this is all dependant on how many children there will be, and how well you know the person who has asked you.