One of the coolest things about my trip to Tokyo Disneyland was the crowd and how respectful they were during all the shows. There's an announcement before each parade and or nighttime show that says to not hold anything with an LCD screen above your head during the performance. My friend and I both laughed at this announcement and were like, "yeah like that's gonna happen". Well, in our two days there, and attendance of ALL the shows/parades, we never ONCE saw anyone put an LCD device over their head. It was astounding. They even have "sitting" sections on the concrete in the front of all the shows and everyone stays completely seated during fireworks, etc...
That alone says a LOT about the culture in the US.