I would suggest getting a guidebook about Disney for kids (they have more photos). Then your family can sit down together and decide what attractions are "can't miss". Since it is the whole family's first time everything can look wonderful and a bit overwhelming.
Like PP have said make sure to slow down. If your daughter wants to ride something 10 times then that should be ok. I have overheard lots of parents complaining about how expensive Disney is and they didn't pay for one ride, or one show, or one whatever. I think that is part of the magic of Disney...doing the fun stuff over and over. I would also suggest bringing some pipe cleaners for your daughter to bend/twist/create while waiting in line. (or something to occupy her time lines can get boring). There is a book we got on
Amazon that is like a scavenger hunt while in lines..they have simple things for kids then harder things for adults.
If you are going to all 4 parks I suggest:
AK-Finding Nemo, Festival of the Lion King, the parade, Camp Minnie/Mickey (characters), safari ride and if your daughter like animals the walking trails Care good.
Epcot-Living Seas area, Turtle Talk with Crush, Kidcot stations, Character Connection, other meet and greets, if you are ok with candy picking out candy from each country is always fun.
HS-meet and greets, parade, Beauty and the Beast show,Voyage of Little Mermaid, Toy story Mania,(this personally is our least favorite park sorry not more helpful)
MK- princess meet and greet, parades, fireworks, everything...

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I didn't suggest rides because I'm not sure how tall your daughter is or what her fear level is. If you have anymore questions or need something cleared up you can send me a private message. I would be glad to help!
Have a great trip