My DD's favorite other than MK when she was 2 (and still today at age 7) was by far EPCOT. She loved the Nemo Ride, Turtle Talk with Crush, Living with the Land the Aquariums, the boat ride in the Mexico Pavillion (one of her absolute favorites at that age), all the Princesses and other characters, Innovations, Spaceship Earth, the bands and street entertainers in WS, the Kidcot stations in WS, Journey into Imagination and the play area after it, and I'm sure there is more.
At age 2, she did not care for AK at all, and begged to go back to MK or EPCOT after a couple of hours. (We have a great zoo at home though- and she didn't want any part of looking at animals when she could be riding rides and seeing Princeses and characters). She did like DHS, but that was because she has always been a "show" kid. At age 2, she had the attention span of a gnat for most things, but would sit through the 3 hour movie the Music Man or the 2 1/2 hour movie Mary Poppins without moving. DHS is very show heavy. Really the only ride for a really little one there is Toy Story Mania, and the line is so long (most times an hour or more) that you be able to do many repeats of it. Other than that it is show after show, Disney Jr., Beauty and the Beast, Little Mermaid, Muppets 3-d. That park was a half day park for us until DD was about 4 or 5. It is actually decent for a slower day with a little one If you have a kid that will sit through shows, but might not be the best if that is not something that interests your child.