It looks like she was at Cosmic Rays, but not 100% sure.
Miss Stefanie had this to say with her picture above:
Shout out to Christopher and friends who work at Disney! Y’all rock thanks for da chocolate !!
Also, check out her Keek of the Disney cast members singing to her!
Did you see Stefanie and her friends at the park? We didn’t have a chance to go back into the Magic Kingdom before leaving to go home.