Tread lightly, and google "weight loss surgery alcoholism" as there are many studies that say 1 in 5 WLS patients end up with alcohol problems.
I knew this personally before I ever started the process, b/c I have a friend who had WLS 10 years ago, and then spent the next 9 years in and out of inpatient care for alcoholism. She lost custody of her children in the process as well. She is currently sober for 6 months or so, but still living in a group home. I don't know if she belongs to some kind of support group for WLS/alcoholism, but sometimes she will post something on FB about it, and will get tons of replies from other women who indicate they had the same problems with alcoholism following WLS.
I confess that I stalked her FB thoroughly as I was making the decision to have WLS myself. I decided that if I was going to have WLS, I was going to abstain from alcohol for life.
I was never a big drinker (maybe 10 times a year at social events, weddings, etc), so for me to make the commitment to never drink again isn't a big deal. I do understand that would be more difficult for someone who is used to relaxing with a glass of wine every night.
I would never suggest that everyone who has WLS needs to abstain from alcohol for life, but would just ask everyone to be careful. If after drinking you feel the slightest bit out of control, start craving alcohol, etc, please seek help before it's too late. Sorry to ramble, but seeing what this friend has gone through is truly heartbreaking, and I thought about her a lot as I decided whether or not to have the surgery.