Besides the GAC information in the disABILITIES FAQs thread, in post 3 of that thread there are some links that might be helpful.
There are some links to the official WDW Guidebook for Guests with Disabilities. They don't have a lot about visual disabilities, but there is some.
There are also links in post 3 to past threads about boarding rides. The question in those posts was more about mobility, but you may find the information helpful, especially the info about boarding rides with moving walkways.
I think someone already mentioned asking about getting a GAC that would allow you to use the wheelchair accessible areas. Most attractions don't actually have separate wheelchair entrances, but using the accessible area would allow you to bypass things like stairs and use the exit for boarding on attractions with moving walkways (you don't ENTER into the exit; after waiting in line, you usually would be routed to the exit for boarding just before the regular boarding area).
Also, something to keep in mind. For some attractions, especially those with stairs or moving walkways, you would be going in with the wheelchairs. For some shows/movies, the wheelchair seating is in the back, so the CM may route your party somewhere else/tell you to stay with the people going to the regular seating area. This usually happens where the wheelchair seating is at the back and is blocked off from the main seating area, so it would be difficult (or not possible) to let you get to the front of the theater.
I have seen people arguing with the CM who tried to route them this way ("We have a GAC that allows us to sit with the wheelchairs. You have to let us!!") and not listening to the CM about why they don't want to be with the wheelchairs for that attraction.