OH MY GOD! This is such a non issue. Everyone on the plane did nothing wrong. The seatbelt sign was off so they were free to move around. That means no turbulence anywhere near so no real fear of throwing someone around that is out of their seat.
Btw Tr1age electronics are allowed to be used while in cruise. Only during takeoff and landing are they supposed to be shut down since those are the most critical parts of the flight and they don't want any chance of interference.
And if anyone cares the whole electronics thing is pretty bogus when dealing with Boeing planes. They do everything by cables and wired electronics and hydraulics. Airbus on the other hand do have lots of electronics that have a remote chance of error-ing out if there is other electronics using the same frequency. Things like a mp3 player that does not talk to any other electronic device? Will never bring down a plane and the FAA is working on revised rules for those types of devices to be allowed to be used all the time.
Oh, I am back to not liking the harlem shake vids. Give me a week and I will prob think they are funny again.