Stressing the fact that I read the original story several weeks BEFORE I saw the movie, I have some comments about what is in the following quote by another forum member.
Don't get upset because I am posting MY opinion here. Another example he offered is the 4th of July scene immediately followed by (or following?) the Jimbo scene, which he says echo the two Thanksgiving scenes. In all four scenes, Ennis and Jack's manhood is challenged. In the earlier ones, Ennis "wins" the challenge (beats up the bikers) and Jack "loses" (humiliated by Jimbo and possibly the bartender). In the later ones it's the other way around: Ennis loses (gets beat up) and Jack wins (tells off L.D.). Jack has changed and matured; Ennis hasn't. (In both, Ennis' reaction involves physical fighting, whereas Jack uses the more mature approach: words.) And still another example: the final lakeside argument echoes the stretch between Jack and Ennis' fight when they're leaving the mountain and Ennis' collapse in the alley, both also involving Jack getting into his truck and saying he's going to visit his parents.
There is no 4th of July scene in Annie Proulx's original story.
There is no Childress, Texas Thankgiving scene either. I seriously doubt that Jack's father-in-law (no name given) would have even eaten one meal at Jack's and Lureen's.
Her old man hated Jack's guts and Jack and Lureen got no financial help form the man at all when he was alive. In 1967, Jack even went so far to say that her old man would probably be willing to pay off Jack to get lost.
In 1967, Annie Proulx's Jack was still driving that old green pickup truck and Jack complained about how it acted on the trip up from Childress to Riverton.
The only person in the story who was known to be Jack's boss in Childress, Texas, was his wife, Lureen, and that was after she inherited the company. She gave Jack a vague managerial title and made him a buyer for HER company.
There are no rodeo scenes in her story. Therefore, the rodeo clown/bull-fighter does not exist. In 1967, we only know that Jack met Lureen where he won another bull-riding award belt buckle in Texas. Other than how he speaks nicely to Alma about Lureen, Jack really has nothing good to say about her at all in the Annie Proulx story.
In the story, Ennis is very sad and uncomfortable while sitting between his daughters at the Thanksgiving meal in the home of Alma and her husband, Bill, the Riverton grocer. When he leaves Alma's and goes to the Black and Blue Eagle Bar, he gets drunk first and THEN gets into a fight.
Jack's complaints about their son's learning problems and the fact that Lureen did not care was after the boy was 15 years old.