Hi!
Congrats on your upcoming trip! Our DS also has ASD (high functioning Aspie) and the access card is really a wonderful thing, we just picked up our doctor's letter last night.
Allowing DS to pack a small bag with a few of his favorite items really helps to settle him in the car for the drive, as well as the hotel when he just needs some time alone to unwind after a long and noisy park day.
Has you child been to the park before? If verbal and if she might be interested, perhaps print off a park map for her to get acquainted with the layout and allow her to circle all the things she wants to ride (or not ride...lol) and given her young age, perhaps look online at the various characters she might meet, both fun and might help calm her in case she's frightened by them in the park. Or print off a list of them and have her check them off as she finds them....keeps little hands and brains busy.

Character Central has a great list of characters and where you're likely to find them in the parks...
Your DD might be a little young, but DS takes his iPod everywhere (he's 11) and its mostly filled with Disney park songs, theme songs, ride soundtracks and Star Wars music...lol...but it's great for when we have to make the transition of hotel checkout and the sad walk to the car to go home. He's always so sad to leave and having the music right at hand, almost as though he's taking part of the park home with him has really made it much easier and a bit happier process. I don't like leaving either, maybe I need my own iPod.
Hope you have a magical trip!!
