Orange RV is annoying about a 40 ft. They used to let up have a parking source for our truck because their spaces don't accommodate both. Last time they made a big deal about it and wouldn't let us come with the same set up. Harbor has been accommodating and worked with is. Orange is nicer, but it's right near the tent city. Harbor is closer to Disney, a bit more complicated to navigate the park with just a tow vehicle and a 40 foot, but doable. Doubt you can navigate either park with a triple load.
Questions like this, please call the park. They can tell you exactly what their policy is. The staff I dealt with was very friendly and helpful.
No, you would have to rent a double space or two separate single spaces.
Thanks! Your answer is awaiting moderation.