If i can help you out.
The ride has a story, that's clear.
However it does have the very thinnest of a very simple story.
And in the same that very thin story DOES have too much exposition in having to explain this very oversimplified story. The issue here is that the story is so very thin that its like a dog whistle. It needs all the signs and exposition to explain to the passenger that there is a story, just a very very, very thin on.
If i saw you blow a whistle and a gang of dogs started running our way, I'll deduce you just blew a dog whistle. No dialogue needed I experienced in vivo what was happening.
On Tiana's, it's like this" Hey Y'all I got this dog whistle in my hand. I wonder what'll happen if I blow it" to "Hey Y'all I just blew this here whistle, did y'all hear anything?" To "OMG y'all see those dogs in the distance, I wonder if it's because I blew this whistle? It's the bees knees" and so on....
Sorry for the long winded post but just like this ride, sometimes it takes tons exposition to explain what can be summed up in pure observation