The "air force wife" lives in another world. See my photo after surgery. How can you have 30 to 40 stainless steel staples in your stomach, from an exterior incision 18 inches long, plus a bunch of interior cuts and stitching, and not have a lot of "silly" pain after surgery?
Use for a search "roux-en-y" + problems to get the other side of the story. My experience is below.
She had no diarrhea or other intestinal problems? Again, she lives in another world. I had diarrhea for 10 days at a time, because the doctor didn't tell me about the massive eating restrictions I had to adopt.
No matter how or why roux en y surgery is done, the bypass allows undigested foods to go directly into the intestine. In my case, yes the food goes into my stomach, but because of the roux bypass, the food then goes directly into my intestine, without staying in the stomach long enough to become partly digested.
A variety of foods then cause pain, discomfort, nausea and diarrhea. Spicey foods (hot sauce), protein drinks, sugars of all types (honey, cake, pie, liquor, wine, kool-aid, box cereals, candy, etc.), chocolates, etc.
Within 30 minutes of eating soups, spicey or sugary food, I start having bowel movements. The human intestine is 30 feet long (according to my doctor), and within 6 hours I can pump out 30 feet of fecal matter.
Solution, don't drink anything with meals, or 1 hour before and two hours after. And I don't mean 90 minutes after, it's two hours or more. Liquid with or near meal time promotes more food leaving my stomach quicker, with accompanying pain, nausea and intestinal emptying.
I also try to lie down on my stomach after each meal, to slow the movement of the food from my stomach into the intestine. As a consequence of not drinking during meals, I'm always thirsty and regularly constipated.
Many roux surgeries involve reducing the size of the stomach. It takes years of self-discipline to get to the point where you don't overeat. But when you do you'll have severe heartburn.
Look on YouTube. There's a doctor there who has done 6,000+ roux surgeries, and on YouTube he states he constantly has patients calling saying they are having a heart attack. But it's actually because they ate too much or too fast, and it's actually heartburn. You have to eat small amounts and eat slowly.
Do more research. The air force wife had a uniquely good outcome, but I would never, ever, ever advise anyone to have roux en y surgery unless they are ready to become disabled by the treatment.
AFTER my surgery I did months of research, and I found about 90% negative comments/outcomes. A car salesman will never tell you not to buy a car, and if you go to a surgeon who does roux surgery, he won't say anything negative (except dismiss patient complaints as "they didn't follow the dietary guidelines). Do lots of research before you commit. There's no going back.