Not blind, I have no experience at all with any of this. However what I found quite impressive was witnessing an Apple Store employee guide a blind person through voice over. That to me implies that Apple at least trains some folks in the stores on accessibility features.
Yep. Sometimes they even hire blind people to do it. There was one at the Apple Store I went to when I first was looking into a Mac. Years later, I heard he left though, moving into another field.