Having read the book literally about 7 or 8 times, I am definitely going to see the movie. I have been waiting for it to come out since I heard about it a long time ago. But...even from watching the trailer, I think there is going to be a lot of things in this movie that didn't happen, or are exaggerated to make the movie more "exciting". I don't recall Chris ever getting thrown off of a train and kicked repeatedly, as seen in the trailer. He was questioned at gun point by a bull, but the book mentions nothing about being beat up.
Another thing that I saw in the trailer is what looks like a love scene with a girl. I really hope there is no cheezy and stupid love story in this movie, even if it is only for a few minutes. First of all, I am sick of every single movie having to have a love scene/story, and secondly, the book specifically mentions that there is no known record of Chris being intimate with any woman and that chastity and purity were morals that he help in high regards.
The final thing I noticed was the scene with him going down the roaring rapids in what looks like a white water kayak. Quoted directly from the book:
"While he was in town, he noticed a secondhand aluminum canoe for sale and on an impulse decided to buy it and paddle it down the Colorado River to the Gulf of California, nearly four hundred miles to the south, across the border with mexico.
This lower strecth of the river, from the Hoover Dam to the gulf, has little in common with the unbridled torrent that explodes through the Grand Canyon, some 250 miles upstream..."
"Emasculated by dams and diversion canals, the lower Colorado burbles idolently from resevoir to resevoir..."
Seems a little bit different than the master whitewater kayaker navigating the class 5 rapids pictured in the trailer.
Despite my criticism, I am looking forward to seeing the movie. It looks way better than anything that has come out recently, I just hope it sticks fairly close to what the book says actually happened and doesn't exaggerate too much.