So looking at the visors and vehicles I think what happens is the Mario cap like visors are "dumb", as in they're just plastic. The actual AR hardware is on the ride vehicles. Once guests board they will pull up and attach the projectors for the AR experience onto the visor. See attached image for what I'm talking about.
This!!! Also (and correct me if I'm wrong) if this is the case, maybe it will help with calibration of the AR between riders?
Another thing (I think) I'm seeing is that it looks like the clear lenses are tucked away in the handle. Maybe.... just maybe there's a disinfecting device inside? Like that sanitizing patent that came out earlier this year? Or am I over analyzing... haha