1st grade is mighty young. I don't think they want anything that she could win a Pulitzer for. LOL Maybe info on the resort you are staying at. Things like how many pools, how many buildings, where did the idea for the resort come from. (ASMo would be different movies, the Poly would be Polynesia/hawian, PO would be Louisiana, etc.)
You could pick a park and go from there. Get her a passport and have her get stamps from the different countries. Have her eat her way around the world. (although, I'm sure she would need a little help
) Take her pic eating different things and tell what country she was in.
DS did a kids thing at AK in Harambe. He colored their flag in and there were lots of people around to give him info. (what each color in the flag means, the exports and imports, dress, culture in general. I found it very interesting myself)
She could do a "project" on the transportation in WDW. Buy a disposable camera and take pics of all of the different options. Give a little explination about how they work or where they go and why WDW picked that particular mode of transportation for that location.
Go on the train tour at the MK. Lots of info there! And great suvies! LOL (though it isn't free, but really neat!)
She could even do a report on the wildlife that she saw.
How long did you stand in lines for rides on different days? (that's a science project) Have her guess how long it will take and see how close she is.
The possibilities are endless! I homeschool and just sent DS to the recycling plant with DH. Field trip! LOL He'll get to see why we save and what happens to the cans. You can make anything educational.