[TOMT][MOVIE] Movie about a kid who doesn't like pineapple.

I remember seeing a movie on TV, around 2007. If I had to guess, the movie was probably made sometime in the 1990s. Maybe 80s at the earliest.

I only remember a few details and 1 or 2 scenes from the movie.

The movie follow a brunette tween/teen girl and her younger brother. I think there may be other main characters, but those two are the only ones I remember. It's made clear that the younger brother doesn't like pineapple; its not an allergy, he just doesn't like the taste. The two/the group were teleported/warped to a different world/alternate reality.

The scene I remember most is where the villain is trying to hypnotise the older sister, but putting her in a dream where she and her brother were back home with their mother. In the dream, the brother is drinking pineapple juice/smoothie. The sister notes that he doesn't like pineapple, but the mother responds that tastes change as you get over. When the girl repeats that her brother doesn't like pineapple, she wakes up/snaps out of it.

The other scene is where the villain is talking to someone, probably the brother, in a white room with a pool in the middle. I don't think it was a swimming pool. It might have been a fountain pool, with or without the fountain.

I would really appreciate any help on this. The pineapple dream scene has been popping back into my head lately, and I want to know where it's from.