We live on a small estate with a park where all the local children congregate & I have 2 kids. They have recently become friends with 2 other children who go to the same nursery and school and I was happy to invite them in to play. However they now come over nearly every night and at the weekend uninvited often for at least an hour. I don't mind this (well I do a bit) and the kids get on but the main issue is they are constantly asking me for drinks and snacks! My two ask as well, naturally. I feel I can't say yes to my kids and no to them but equally, im getting a bit fed up with catering for 4 kids every day - it's costing me a fortune! Any suggestions how to handle this? I'm obviously too soft!