My husband and I have long encouraged our children to have their friends over to our house. It allows us to maintain a close relationship with our children as well as the opportunity to get to know their friends. We truly believe it's in a parents best interest to know the people who are really influencing your kids. We've been very lucky over the years, in that many of our children's friends are more like extended family now. Now that summer has arrived, we're gearing up for a house full of …