A couple years back, I was riding Pirates of the Caribbean and another person in the boat was taking flash pictures. Some other rider called out rather brusquely, "Turn the camera off!" After the ride ended, Camera-Guy and his wife (with their maybe 8-year-old kid) confronted me in the gift shop, having concluded, erroneously, that *I* was the person who had yelled at them during the ride. Both were quite agitated and I got the distinct impression that Camera-Guy was going to assault me over it. Neither he nor the wife believed my denials. But with their kid standing there, I guess they decided that starting a fistfight was not the way to go. I honestly thought we were only a few seconds away from that, given how loudly Camera-Guy was shouting and the fact that every aspect of his appearance and behavior cried out "fruitcake." (I guess Disney Security had better things to do, since they never showed up.) Eventually they got tired of yelling at me and left.
Oddly, there was a follow-up of sorts just last week. I was riding POTC again, and sure enough, somebody starts taking a long sequence of flash pictures. This time the lights come up, the soundtrack mutes, and a cast member comes on the PA to say, "Attention, pirates, please refrain from flash photography" or words to that effect. Funny stuff...