As Seth and Tessa approached Mickey, he gave Seth a "thumbs up" for his Perry the Platypus shirt! You don't see Perry (or any of the other Phineas and Ferb gang) much yet at Disney World. But the Cast Members like them! We found Mickey at the exit of Disney Animations in Hollywood Studios.Feeding the dolphins was a delightful treat (but it's an extra $7 per person, so I took photos).
Finally (we didn't see them when we went 3 years ago), Tessa gets to see the Princesses (and the Princes, too!) She saw Cinderella and Prince Charming, Snow White and her Prince, and Aurora (Sleeping Beauty) and Prince Phillip.