I don't remember much about it but it was a movie, maybe a show, where there were people dressed in rabbit costumes among other things. They entered the land by a tree house or maybe eating some weird fruit, which there was a lot of. During the show a fairy scolded a mouse with "scooping up the field mice & bopping them on the head" rhyme - I know that is super vague but does anyone know what I am talking about?

You're thinking of "Wee Sing in the Big Rock Candy Mountains" (1991) They enter the magical world through a slide on a kind of tent fort type place.

Oh my goodness. This is crazy
Okay, for years I've been trying to figure this movie out
And today I decided to give it another shot
And I put all my information that I had about this movie into Google
It took me here, and for the part hour I've been looking at questions
Hoping to find someone asking about this movie and had been given an answer

When I was unsuccessful, I decided to make a username and ask myself
All for this one movie, of course I sign up and get ready to ask my question
When I see your question at the top of the list.

You have no idea how badly I want this name.