Marco Polo.
Sadly it's not a unique event. Walk through Tung Chung mall or D.B. Plaza. Look at the kids behave and you will see in about 5 minutes which kids have stay at home moms spending time with them, and which is the kids of the small town girls who married a pilot and sit around the coffee shops in gym outfits sipping latte's, chatting about their bad business class experiences, while the helper is on duty 18 hours a day.
Every time I get upset by those brats I realize they are not to blame, and the helper is doing best she can with the kids discipline.