I tend to stall a little. I don't drink a lot, just socially, one or two glasses maybe once a month on average. I did have a couple of glasses of wine last weekend, and about a half glass on Christmas night. I also went a bit over my 20 carbs in food on Christmas Eve and Christmas Day. Calorie-wise, it was probably a maintain or slow-loss level overall.

It never knocked me out of ketosis, but I'm up a couple of lbs that feel like water retention more than anything. To be fair, I also started TOM on the 25th, so there are a lot of factors here. I did something similar (minus TOM) at Thanksgiving, and also stayed in ketosis but stalled for about a week.

If alcohol were important to me and I felt I needed to have a glass several times a week, I expect it would affect my loss. As it is, I'm in my late 50's and hormonal, so I already have enough stalling factors in my life as it is. I'll probably avoid it for awhile from here on.

Any alcohol seems to make the scale go up for me for a few days. I'm sure it's from inflammation, but it can certainly cause a bit of a delay. If I have one small glass, maybe 4 ounces, of a dry wine with 3g carbs or so, it doesn't seem to have the same effect.
It tends to take less alcohol to induce intoxication on low carb, so keep that in mind. I used to be able to drink a whole bottle and barely feel it. Now, 3 glasses (about 15ounces) will have my head spinning!

I don't drink wine but I do have vodka with water lemon and lime a couple days a week. I can usually have 2 glasses with 2oz in each and do fine it it slows me down its not a lot but on special occasions I will have more and it does start to slow down but not stop my loss. If it does affect me it's only for a couple days.