Charleyann, the post on the transportation board is quite different from the post you made on this board. In reading the transportation board, I honestly couldn't tell that your son was disabled. You didn't mention that he was in a wheel chair. You did say that you needed to plug him in, and that he needed his treatment, but that could also mean anything. Your details were much clearer in these posts.
Please don't be so hard on the people on the transportation board. They were trying to answer your concerns about Delta compensating for a flight that was delayed due to mechanical problems. It turns out that your concerns were more for your disabled son, and that just wasn't made clear.
I'm glad that you had a wonderful time at WDW and I hope your trip home was (finally) a smooth one.