I didn't know about the card either, that's so cool! My sister and I made up a game when we went to Disneyworld for waiting in line. It was like a last letter game. Someone says Orange, then you had to find a E word. We would try to make the other person stuck with the letter y, cause there's not many words for y. Also, the idea is to not say a word the person said previously. So when someone says a word the other person said before for a letter, then they loose.
I also was wondering, about bringing a Nintendo DS. What would you do for like water rides, or thrill rides? I'm not sure how much of this is a non-issue, based on if your kids like thrill rides or not. I always was kind of afraid to bring mine, cause I thought if I left it in the area for things you pick up after the ride, someone might steal it.
A tip for leaving the Magic Kingdom if there's a long line for the monorail. Take the monorail to the hotel, next to the line to the Magic Kingdom parking lot. The monorails at the hotel will connect to wherever you want to go. So you don't have to wait in line. What I suggest, is parking in Epcot, then taking the Monorail to the Magic Kingdom parking center, and hopping on the monorail to Magic Kingdom from there. Since there is vastly less crowds for Epcot. So it won't be like, having to be on a tram with a ton of people, or waiting in line for a tram. I wouldn't suggest parking at MGM, because the only way to get there is a bus. When the monorail is like sitting down for 2 seconds and you're there. Also the monorails are really roomy.
Also, don't be too surprised if your child likes Epcot Center more than Magic Kingdom. All the technology at Epcot is so much what Aspies would find fun.
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"Sprinkle, sprinkle, little bar, what I wonder is a cat" - Cheese from Foster's Home for Imaginary Friends