Last May a friend and I were riding, for the first time, Snow White's Scary Adventures and we had just gotten to the part where Snow White is fleeing through the forest and the ride stopped. No big deal, we just watched the glowing alligator eyes with their mouths chomping for a little bit while we waited for the ride to continue. Then, we heard a CM over the loudspeaker tell us to stay seated and the lights turned on!!!

We could now see everything, everywhere. The huge warehouse-like look, the torn black curtains separating each scene, the cardboard looking trees and the alligators, which were just alligator heads attached to long flat metal pieces that moved forward and back, making the mouth move. We were horrified.

The family in back of us leaned forward and said, "This is what's supposed to happen, right?" Even though it was our first time too, I knew that this could not be something that they would want you to see!
After awhile, the lights turned off and the cars started moving and we finished the ride. My friend and I were a bit traumatized. I thought it was like accidentally catching your neighbor naked through a window. You're uncomfortable and you don't want to look the neighbor in the eye later.
It may all sound a little dramatic but we were caught in the story on the ride and then all of a sudden yanked out. It was very startling. I guess I prefer to see the illusion. I don't think we'll ride it again.