Hey, belbbmfan, let me second the welcome!
And I wondered today if "tent don't look right" has a subtext. Like, tent don't look right because you and I aren't in it together!
Course, he wouldn't say that. So maybe more like, tent don't look right ... because its purpose and significance is about to change.
I love the part where, right after Ennis says he ain't had the opportunity to sin (which of course I also love), Jack goes, "Hmmmm!" like, "That's intriguing!" I always laugh at this line, because it reminds me of that post in the old cowboy etiquette thread: "If your camping partner tells you he has never had the opportunity to sin, then you are obliged to present the opportunity."