Final observation: The abuse of disability status seems out of control. I am probably going to get flamed for this, but I think being 450 pounds overweight is not a disability. It means you should be walking, not riding a scooter. One thing that I think contributes to the parks and transportation feeling overcrowded is that there are seemingly 100,000 scooters running around running into you, and those people then have to be accommodated on transportation. If you are waiting for the monorail forever, which happened to us too, it's usually because every car has three scooters in it taking up all the room. More than 75% of the people riding them don't look disabled at all.
One night, we waited for a bus to return from Animal Kingdom. It took absolutely forever for the bus to come, and the line swelled to something that looked like five buses would be needed to relieve the line. When the first bus arrived, the driver had to take ten minutes to let the seven scooters on the bus, which then took nearly all the room. We were the lucky four who also got on that bus. At the hotel drop off, two of the scooter riders picked up their scooters and carried them off the bus! By themselves! I think there are a lot of people taking advantage of the system.