The end credits feature pictures of those who are banned for life from the water park. They feature, in order: Donny, Magic Man, Squirrel, Tiffany, Lumpy Space Princess, Lemongrab, Ricardio, and Ice King.
It's just another adventure time episode. Like, just bc the animations different doesn't mean it's worse. Maybe I'm biased bc I loved the different animation styles episode of bobs burgers as well but yeah I liked the episode and it's definitely overhated.