My DS is 11 and is still pretty cautious but DD9 loves all of the thrill rides.....so we were very surprised when she was frightened during the Pirates of the Caribbean ride. Sometimes it's just hard to predict.
I do think the magic of Disney, particularly in MK, will help your DD to really enjoy herself. I agree that Buzz Lightyear is a fun one for the whole family. Aladdin is very tame, Small World and consider taking a break from outside and enjoying the Hall of Presidents. We loved it and she is a good age for it.
At AK, we all loved the Kilamanjaro Safari and the Lion King Show is fabulous for the whole family.
When we were in MK last July, the Stitch ride was fairly new but many families we talked too did not enjoy it. Very loud, bumpy and dark were the reports we heard but we did not experience for ourselves. That may be a ride where you try it out first to see what it's like firsthand.
MGM has lots of shows to enjoy. Things like Who wants to be a millionaire and Beauty and the Beast are fun to do. We watched a comedy show taking place on the street at MGM that was very funny.
I think you'll get a better feel for things after you are there. Even at 11, I still gauge my son's reaction to things as we go along.
We love to start off our visits with breakfast at Chef Mickeys. It puts everyone in a great Disney mood and then we head over to MK. I'm sure it will be a magical trip for your whole family. Enjoy
