Also, there's a good number of people you'd never expect of being "blind." Mostly, it because they have some sight, just not good enough make out more than dark/light and forms.
For them, the braille is there so they can read the sign. They could "see" the sign, see the door, know how far it was from the elevator, but they can't see more than a blur on the sign itself.
One moment sticks out in my mind: I was at the Wonders of Life with a friend, legally blind, and her guide dog. I walked right out, we were talking, and a few feet later I realized she wasn't with me. It was night, so the light level was low, and she had stopped at the photocells at the entrance (those narrow walkthroughs that count people). She couldn't see well enough to navigate them in the low light and because of how narrow it was the dog wasn't walking right through either. Of course I helped her get through, but it made me think.
I can just imagine how hard it must be to get around the entire park. She can technically see, she sometimes goes around without her dog (especially when she wants to do something he wouldn't be able to do or not readily welcomed to do). So, yes, that sign certainly needs to be fixed and brought to Disney attention - it's really a lot of small things we would never even consider that can make all the difference in the world to another person.
