This seems to vary from person to person. I've read stories from others that report the same alcohol intolerance issues. But there are others that have no issues at all. I have two friends without gallbladders and they enjoy their favorite beverages as before. And they don't seem to have any dietary constraints either.
I can't think of any biological reason for it but many have commented on having the problem. Seems to be a variable thing and the liver/biliary system is complex.
Fntn is so right. My husband just had his removed and some things bother him, others don't. We were told it is a trial and error kind of process. He was told to keep his fat below 50 grams a day for at least 6 months to see how he does. He tried a little peanut butter on an apple was violently ill. If you want to test it out, you could try a small amount of alcohol, see how you do
Good luck, Dee