I did Magic Music Days at Disney 14 yrs ago with my dance team when I was 10, I'm assuming they just changed the name. I absolutely loved it, at that time we actually danced in the parks, now they have a nice stage in DTD where the dancers perform. I believe they also do a dance workshop with the kids. When I went I was yo young for the age restrictions they put on the class but I think they lowered the age limit since I went. For fundraising I say sell candy bars all the way. I did door to door and contacted local store about selling outside their stores as well. I know I'm willing to donate a buck when I would never buy the bigger priced fundraisers they have kids do. When selling at the store I literally spoke to every individual as they walked into or out of the store, I didn't sit on a bench on the side yelling out what I have to sell which is what I see so many kids doing these days. I had a "spiel" explaining what I was selling candy bars to raise money to go with my team to dance at wdw. At valentines day we made flowers out of Hershey kisses, kabob sticks and ribbon which we also sold with the candy bars. I also did a garage sale, sold cotton candy at the sale, and all sorts of things to earn money. Lately we have found selling on craigslist to be more profitable if you are selling the "right" stuff. We also booked our flights and hotel separate from the group to save more money.
My parents spent tons of time helping me sell enough candy bars to raise enough to pay for the entire trip. Would it have been easier for them to pick up a couple extra shifts at work? Sure, but it taught me a better lesson about the value of a dollar and working for what you want. Good luck for you and your daughter as you start this process!