Here are some details from an interview with imagineer on podcast. May contain some spoilers. Two initial reviews by CM's have it positioned as better than either Pooh ride(WDW & DLR).
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Scroll down for details.
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Here you go:
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-It will be the only
disneyland ride where you the ride takes you through a bathroom scene
-The queue area is supposed to be like a taxi cab or public transportation station
-There will be over 40 characters in the ride (a typical ride has about 20)
-The Roz character at the end will be like Crush and will interact with you
-The sweater for Roz was hand nitted
-Randel will be featured in several of the scenes
-He will appear and disappear right before your eyes (A reverse Haunted Manison ghost effect (the pepper effect I believe)
-In one scene, Boo will hit him on the head with a bat and he will change colors as she hits him (exactly like the scene in the movie)
-A majority of the original voices will return (Including Billy Crystal and John Goodman among others)
-The storyboard for the ride originally came from screen shots from the movie therefore a majority of the scenes will look very close to the scenes in the actual movie
-The ride is fast pased even though the cars are moving slow