The key—which Walt & crew were so good at—is to just focus on which elements of the story lend themselves to a good ride. Heck, Mr. Toad’s Wild Ride is entirely based on an event in the film that happens off-screen!
You could even make a thrilling ride out of Cinderella: Shrink the riders (like on Ratatouille) and just focus on the mice trying to get the key to Cinderella while being chased by Lucifer the cat!
I’ve said this before, but my version of a BatB dark ride would have you stumble into the darkened castle, hear Maurice’s cries from his cell, ignore Cogsworth’s and Lumiere’s warnings, see the rose, then frantically try to escape the castle as a raging Beast lunges out at you at every turn!
And a final quick scene has you racing past Belle on her horse outside the gate, asking, “Excuse me—Did my father pass this way?”