This reminds me of Thanksgiving at my brother's house. He has 3 teenage sons, and they were all super helpful while we were there.
My wife asked him how he raised such helpful kids and he said: bribery. If they behaved well and helped with things they would be getting a video game of their choice.
As some stranger on the internet said:
"After I had my first kid, I thought I was God's gift to parenting. A few years later I had a second kid and he cured me of such misconceived notions." :-D