I heard about the Mr. Potato head, he is supposed to well........maybe I shouldn't ruin the surprise, but he will have the voice of Don Rickels who did the original voice in the movie. He also did the break down spiels for the ride. Mr. Potato head will be inter-active kind of like Crush in Turtle Talk, but the voice again is Don Rickels who only did about 700 phrases for the character.
To the original question, like DLR29 said it will be mid-way style games with 3-D glasses and the ride will be different for different ages so it has levels of play. I heard that disney Worlds version will soft open in April maybe DCA's version won't be far behind. I have not heard any news of DCA's Toy Story Mania.