Dreams can reflect fears. And the phenomenon is quite often experienced in drunk dreams experienced by those in recovery from alcohol abuse. Early in recovery, the fear of relapse can be very real. I haven't had a drink for 29 years and haven't had a drunk dream in probably 27 years, but I will say they were as terrifying as my worst ordinary nightmare, and the disturbance is carried through for minutes after awakening from the dream, even as you are realizing it was only a dream.
My dream would always start with me being drunk and not remembering what caused me to get that way, but just knowing that, without thinking, I had taken a drink, and then several more. I would be hating myself for not paying close attention to what I was doing, and wake up feeling mad, disgusted, and vulnerable. Ugh, the vulnerability was the worst part. Mad and disgusted I was used to.
All those Hollywood films about alcoholism follow the same prescribed story line, but the drunk dream has only been included in one short scene of one episode of a series "A Single Drunk Female," which was cancelled after the second season. It was written by an alcoholic in recovery, and in the story line, she was a surprised and disturbed as I was when I had my first one, and her father reassures her, "It's all part of recovery."
Not everyone has them, but it's very common.