Another reason why I rate Pandora as last among the three (Diagon, Hogsmeade, Pandora - in that order) is because I can see the floating mountains from AK's parking lot. I wish they could have hidden those somehow so as not to sorta ruin the illusion of one's first entrance into the land itself (having already seen it from the outside).
They're also visible from the highways around the park. I like to believe the choice to not hide the tops was 100% intentional as an homage to the history of Hollywood Studios. From outside it's supposed to look like a movie set and then once inside you're supposed to feel like you're in the movie / in the world itself.