I am 50yrs old and had gastric bypass dec. 19. My surgeon recommended gb over the sleeve because I have gerd and he said the sleeve would make it worse. I was disappointed and wasn't sure about being re-routed. I agreed as I trusted my surgeon. I do not regret my decision. I had very little discomfort from the surgery. I have had no problems with gerd. I was hoping that my body would reject sugar but it does not. My surgeon had told me prior to surgery that dumping syndrome is only a possible side effect. I have had a few very mild cases, keep in mind I am a sugar-holic. I can still consume sugar and fat moderately.
I have found that I prefer protein shakes to food most of the time. I don't and never have liked cooking. If you enjoy cooking and your recipes you will probably be able to tolerate it in small amounts. One thing I've found is that you don't know what your stomach can handle until after the surgery. It is different for everyone. Some are sensitive to sugar and fat, some are not. There's no way to tell ahead of time. My only regret is that I still get hungry and my stomach still growls (not the gurgle you hear when it's circling the drain that is different). Gastric bypass does not completely get rid of ghrelin. Once I got my routine down it lessened. Hopefully will stop soon.
Don't overthink and worry too much. Just take it one step at a time, your body will tell you what to do. Once you heal, you should be able to eat normally for the most part in small amounts as I do.
This is my first post ever so forgive me if I've rambled or responded incorrectly.