In PotC (pre Jack Sparrow) and the Haunted Mansion .... It's abouit rich BACKstories .... while you get to create your OWN story in your head.
It's that subtle type of story telling ... that many today take for granted .. and don't realize it.
The act ... where your mind is involved in your own world, that you create, as you ride. It's a form of stimulation to the senses ... that I clearly understood as far back as I can remember.
When Disney tells a specific story ... straight out of any one of their films (Little Mermaid in DCA) ... You just take "backseat" while Disney tells you the story of someone else's world/journey/experience.
When YOU play central character ... That's "interaction" at it's best!