Protein shakes almost never give me discomfort, it's just a tough call when choosing it over a real meal. Breakfast on an empty stomach is the when my I'm the most sensitive. A little yogurt, cut fruit with a tiny bit of honey sets me up for the day.
Oddly enough I went to a "raw foods" restaurant. Where the food isn't cooked above 40c? I went in with zero expectations but I ate plenty with no gas, or discomfort. Generally the healthier the foods, the less trouble they give me.
But this is all after ten years post op and I still have to be very mindful.
Get to love boiled eggs as snacks, low fat foods and simple food combinations.
A burrito, or any stacked sandwich with (fats) cheese, beans (carbs), meat (protein), dairy dressing and spice... I might as well stick a shotgun on my mouth!
But I am no longer carrying around two suitcases (100lbs) with every step, which is a good thing.
But that's all the physical, the mental attachment to taste stimulation is a different ballgame. Don't replace it with booze.
Good luck.