I expected this to be a somewhat amusing adventures of ditzy girls traveling, but my daughter highly recommended it to me, so I read it.
This book had a lot more substance than that - perhaps because the author was writing it years after the trip to China, so had some perspective on her 21/22 year old self. An interesting look at the way two somewhat immature young women handled a trip for which they were completely unprepared - neither spoke any Chinese, neither had any real experience with other cultures, and this was in 1986, when tourism in China was not a routine matter.
Along with that, an interesting take on why you maybe shouldn't go on this kind of a trip with someone who isn't really much more than an acquaintance!