Oh, I see. That part is true as well. For example, the system that helps the marching cards move no longer exists, so if that ever permanently breaks, they'll have to come up with something else to get it to work. Have you ever noticed the CMs that work Alice are very specific as to how many people can sit in the front and back of the caterpillar? That's because the vehicles are sensitive and too much weight in the front can cause the vechicle to stop and the entire ride to shut down.
Alice is quite fragile. I literally would pray the ride wouldn't break down every time I had to work that rotation. Toad can also break down easily, and it's included in the Alice rotation. Both are a recipe for disaster.