I wouldn’t do it. I didn’t do it.
If your child has actual special needs, look into the
DAS pass.
If your child is simply acting like a child, well, Disney is where my kiddo learned about lines. If he wanted to wait for something, he waited. Misbehaving meant the end of a line for us. And the two rides we went on post-potty where he suddenly had to go right now this instant? We exited completely and came back up the full line the next time it was convenient. On a longer
Disneyland trip we did that on jungle cruise three times (each time he had to go at the same spot in line). Took us three days to ride that one.
Now in our case it had a lot to do with it being impossible to rejoin. My now-ex is a big guy, and couldn’t squeeze past people. I was, for a few years, approaching that size, and even when small it’s not comfortable, especially if the people you’re passing aren’t small.
I only had the one experiment, er, I mean child, but I wouldn’t change it with another child. Want to ride or meet a character? Wait in line. Need to use the restroom all of a sudden? We’ll come back later. (Special needs aside, of course)