Ok so let me get this party started.
In 3 episodes we have South Park relate to Disneyland in some way.
In "Big Gay Al's Big Gay Boat Ride" Big Gay Al shoots at anti-Gay protesters in a way similar to the shooting of the Hippos from the Jungle Cruise.
In "Awesom-o", we see Cartman disguised as Awesom-o and Butters riding the Astro Orbiter.
In "Cartman's Silly Hate Crime 2000", Cartman sneaks Disneyland into a prison.