Having a large family living in close proximity is truly amazing. The kids have built-in best friends, I am never lacking for friends to hang out with or to help with kiddos, and when we all get together it's always a huge party. I wouldn't trade it for anything.
But, the first time you cook for that family it can certainly be intimidating. I remember the first time I hosted Christmas in my mid-twenties and my sister casually asked what I was serving. Until that minute I had never even considered the work that went into feeding a family as large as mine, as I was typically only responsible for a dish or two pot-luck style, and I was terrified about feeding everyone on my new home ownership budget. I called my step mom and asked for advice, and I will never forget her response: feed them beans.