I'll admit, the movie was/is one of my all-time childhood (and lets face it, adulthood too) favorites. So, I went into this book with certain expectations. Most were met, and it was engaging, exciting, and a very entertaining read. And about 3/4 of it (or more) had nothing in common with the movie, so I did not know exactly what was going to happen as I read it.
My major complaints are few, and really not that major. Some of the slang was unknown to me; the verbiage was at times difficult to get through during the longer paragraphs and monologues. Overall, I'd say it felt pretty winded and could have used some additional editing/polishing.
A more personal annoyance was the level at which religion was highlighted in the book, savages as groups were all described in generalities (hugely insulting ones), the women were largely useless and meek (and everyone spoke of this as though it was the right thing), and how on one line the characters talk about the native wildlife, and how it is about to go extinct, and in the next line they are desperately trying to hunt the elusive and rare creatures. Oh, also, Mary Grant's love interest is 30 (she is 16). These, I intellectually understand, are just products of the time period. But it doesn't make it any more enjoyable for me to spend hours reading about.
But, as I always do with reviews, I am focusing on the negatives. The book really is great, and despite these regular little irritants, it is extremely enjoyable and generally well written. The characters (most of them) are well developed, and the relationships among them develop believably and naturally. Of note, the repartee between Paganel and McNabb is always great, and everyone's love and respect for young Robert (they never overtly pity or patronize him) is truly touching.
In short, it made me want to travel around the world...all along the 37th parallel of course!