It's the details!! It is how you can get lost in a feeling standing outside of the Jungle cruise..the sounds, the details in the rocks, the cement patterns, lanterns, etc. Then you walk a few hundred feet and your immersed in the old west or the bayou. Disneyland is all about the details that most people don't even notice. Like the fortune teller lady sounds, the railroad sounds, etc. How the Hollywood style building methods (building details get more compact the higher they are) to make it look like there is a whole town. I have been to many amusement parks but no matter what kind of rides there are or what the theme is, its just rides on a lot. Disneyland gives you an experience even when you are waiting in line. Indiana Jones for example has some of the coolest details while your in line.
For me, it is getting lost in the details.