I had one occasion where my husband and I upgraded to first on a trip to Hawaii. Our little one was sitting in coach with my parents. From time to time, he wanted to see mommy or daddy so we played musical chairs with my parents moving from first to coach. I brought him up with me once to calm him down with my ice cream sundae. He was acting up a little bit and before I knew it the stewardess told me a passenger had complained and that I needed to return my son. I was so mad because on the same flight, there was another couple with a lap child (little girl - 18 months) who just wailed and screamed throughout the movie and flight and yet the parents did nothing nor were they asked to leave first. I admit she was even annoying me but when my son was acting up, I didn't hesitate to move him from first as I did not want to disturb all. But he acted up once and I was kicked out. The stewardess' were then mad that we were playing musical seats in first and coach but there were no other seats that I could displace my parents while I sat with my child in coach. What would you have done? I admit, I was mad the rest of the flight and could not enjoy the benefits of first that I and my husband were entitled to.