I found this thread about 2 days ago, and I've spent almost all my free time the past 2 days reading it. Some really funny stories. I have nothing that can come close to them, but here a story that kind of fits the description.
My wife and I were at AK last year, and since it was bright and sunny we decided to ride Kali. Sometime during the ride the weather decided to change to cloudy and damp, so we were unable to dry off. About an hour later, we decide it's not worth it to be soaked all day, so we're going to go back to POFQ & change. We get on the bus, and end up sitting behind a family which from their actions I would say was mother, 3-4 yr old son, & stepfather/boyfriend. At first son was seated all the way to the right, with mother beside him, and stepfather across the aisle. But when the bus started to get crowded, the mother took her son on her lap to let stepfather slide over, and make room for others.
To me it seemed like a nice gesture, but the kid started having a fit. He continued screaming "you took my seat, that was my seat" over & over again, for the whole 20-25 minutes, including a stop at blizzard beach. The parents tried to calm him down, but he wouldn't have it.
Overall, I felt the parents handled it as well as they could. They didn't make the scene any bigger than it had to be, but they did not apologize to anyone around them, which I thought would have been a nice gesture. The child was just being a typical 3-4 year old after a long day. My wife and I still joke around to this day when we get on a bus, hoping everyone can have their own seat for each trip.