Is there a monologue in the book of Mormon the musical?

Yes. There must be a few but the one that I know is the following:

When I was nine years old, my family took a trip to Orlando, Florida. And it was the greatest, the most magical place that I had ever seen. I said to myself, "this is where I want to spend eternity". My parents told me that if I made god proud and did what the church told me, then in latter days I could have whatever I wanted. So I worked and I worked and even when I was studying Mormon stories and I said to myself, "hmm, well that doesn't make any sense"... I kept working! Because I was told that one day I would get my reward, Planet Orlando! But what do I have now? I can't even get a ticket home...