I imagine this collection of boatman stories would be far better if you have gone on a river trip in the Grand Canyon. If you haven't, though, let that not be a deterrent from reading: I have not gone on a river trip in the Grand Canyon and never planned on doing so, but after reading these stories I am now seriously considering it.
Yet the reason that I say this collection of stories might be better if you have gone on a trip is that some of the stories are either not all that interesting or are more like sketches that don't seem to even try to be interesting. To those who have gone on a river trip, these sketches, the brief remembrances of moments in time, would be far more interesting because they'd then speak to a memory or memories of the reader. But if you have no memory of a river trip down the canyon, reading someone else say, "The rock was red as a really red fish," you'd think, "So the heck what? I can see that from the top of the Canyon if I want to."
In general, though, these stories are both interesting and usually comedic. Some of the writers are clearly good and natural story-tellers that could make any bland story jar a reader's laugh cavities. And some of the stories transcend the Grand Canyon, hitting themes that are as timeless and worthwhile as the Canyon itself.
I personally picked up this book at a Grand Canyon store, and read it because it is nearly my one-year anniversary of my first, and perhaps only, trip to the Canyon. I recommend it to anyone who has been to the Canyon and to anyone who is thinking about taking on an adventure.