This is a funny story. Her previous "The Tough Guide to Fantasyland" was a hilarious guide of the stereotype fantasy-world for offworld tourists.
Now, the world construction of this book is just for that guide's sake. (or vice versa...)
Mr. Chesney sends out tourists to the fantasy world as a "Pilgrim Parties" and the inhabitants have to play their "role" and must suffer the consequence. Wizards, soldiers, elves, dragons, farmers and kings and everyone want the "Pilgrim Parties" stopped but can they prevent it?
Stereotypic story with enjoyable element. If you want something to read to pass time, take this one. Recommended.