My sister is getting married next year in a church and having the reception in my dads garden. She is not having any kids apart from ours - 3 and 1 - and there will no space left in the garden for them to run about etc once the marquee is up. I am bridesmaid too so will be up to my dh to look after them a lot and as we have no family there will be nobody to help a lot (friends there will I hope!). I am thinking about getting a nanny to look after them after the service to when they go to bed but no idea where to look for this sort of service. I would base them in a neighbours house so they'd have all the space there. Any ideas and as to cost too.