I have to format it and add pictures, but here is the cartoon crossover.
As new O.W.C.A. (The organization without a cool acronym) recruits, it is your job to help Perry the Platypus stop the evil Dr. Doofensmirtz, but when Dr. Doof unleashes his Interdimensional Portal-inator, you get sucked into the adventure as the barriers between cartoon world's break down!
-queue-
The queue line is themed as the lobby to Doofensmirtz Evil Incorporated. You pass by recreations of some of his most famous evil "-inators" from the show (he calls all his devices "-inators").
-pre-show-
You enter an "elevator-inator" that will take you to his penthouse lab. In reality, the elevators don't move vertically. They just vibrate a bit to give the illusion of movement. During the elevator ride, Major Monagram (the head of O.W.C.A.) briefs you on your mission. Also, Carl (an intern at the O.W.C.A.) gives you a safety briefing. You then exit the elevator and board the ride.
-Ride-
The ride reuses the simulators and technology from Star Tours. The animatronic C3PO is replaced with an animatronic Dr. Doof. The small screen on the side now shows Agent P who is sitting wearing a seatbelt.
The ride starts with Dr. Doof asking if everyone out on their seat belts like his assistant (the cast member) told us to. "Good!" Dr. Doof responds, "now you are all trapped!" Agent P struggles against his seat belt. "Now, behold! My ultimate Inter-dimensional portal-inator!!!!" The machine accidentally back fires when he tries to use it to send the minivan that took his parking spot into another dimension.
The backfire sends us back to a random cartoon from the 50s to the 80s. Much like Star Tours, there is an element of randomness to the ride. Some examples you might find in this section are: Looney tunes, Jetsons, Flintstones, Transformers, or Scooby Doo. Wherever you are, Dr. Doof is looking for a portal out. Eventually he finds one taking you to...
A random cartoon from the 90s to today! Potential examples include Ducktales, Spongebob, Tailspin, Adventure Time, Regular Show, or Over the Garden Wall. You find another portal that takes you too...
Nothing. You are in either a blank black expanse or a blank white expanse. A giant floating baby head drifts by (a running joke from Phineas and Ferb). Suddenly an interdimensional traveller comes and rescues you (after a quick detour through their world of course). Some examples of Interdimensional travelers are: Star Butterfly (Star vs. The Forces of Evil), Bill Cipher (Gravity Falls. Dr. Doof agrees to owe Bill a favor in exchange for help getting home), Rick Sanchez (Rick & Morty), and Steven Universe (Steven Universe. Technically, gem warp pads only travel long distances, not across dimensions, but its close enough lol).
After landing safely back in Doofensmirtz Evil Incorporated, Dr. Doof notices that Agent P has broken out of his seatbelt. Perry hits the self destruct switch on the Inter-dimensional portal-inator. Dr. Doof brags that "jokes on you Party the Platypus! I installed a blast shield to protect me from the self destruct switch." As he says that, the shield between guests and the animatronic begins to raise. "Wait! No! I'm supposed to be on that side! Curse you, Perry the Platypus! And Disney World guests!!!!!" You hear a boom and an O.W.C.A. agent (exit cast member) tell you that you are now free to escape Dr. Food's clutches and release your seatbelts.
-exit-
You exit out the right into Century City. But a "Gift Shop-inator" is nearby. Not large enough to be a full store, it is really only a large merchandise cart.