Hi Matt!
Walt Disney World is definitely the place to go to celebrate any type of occasion.
When you arrive at your resort ask them for a celebration button for your daughter to wear during this trip. They will write on it that she is celebrating her graduation and by wearing it she will receive numerous congratulations from cast members and other guests.
Before you head down to Florida for your big trip, go to the
Disney Store online and purchase a Mickey ear graduation hat. Have it personalized and sent to you and have her wear it on the flight or drive down. You can also check out the
Disney Floral and Gift ideas. If you don't see something or you wish to add to what they show, one of their Dream Makers will be happy to help you make that gift as personal as possible. Have it delivered to your room during your stay and see her eyes light up with the surprise.
You can always add a
Cake for any special occasion and consider a
Disney Gift Card as a special graduation gift for her to use during her vacation.
As you can see there are lots of ways to help celebrate and I am sure your daughter will never forget her graduation trip!