These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Americans Hate Tingle: Manaphy in this Pokemon movie barely has any kid fans in the west, due to several western kid fans accussing it's Imprinting to May that causes a conflict to Jackie's mission or at least, make the whole movie worse.
Base Breaker / Broken Base: This movie is either an adorable relationship on May and Manaphy, or a rip-off to Misty and Togepi.
Fridge Horror: When Max is looking at one of the water-globes with the Pokemon in them, a Gorebyss pokes out of the water and startles him. One might assume it was just sayinh "Hello"... untill you realize that Gorebyss is a vamparitic parasitoid that sucks its victims dry and kills them. It wasn't greeting him, it was trying to feed on him.
Well, it was a tamed Gorebyss. It probably gets fed by its owners, and they're right nearby if it tries anything, so...
Ash stuffing May, Manaphy, and Pikachu in a very small tank as he goes off to restore the power to the temple alone. There was no visible air tank on that thing and somehow the three of them taking all the air didn't suffocate them.