Well, one could think about the often excess energy you get from alcohol, that usually turning to fat or causing fatty liver possibly.
Excess energy turning fat, making one fatter; less of visible cock, possible cardiovascular problems and so on.
As DLD said, it's a tough topic to give advice on.
With many things in life moderation is often key to a better path. I've noticed occasionally having a drink or two, meaning really drink or two!, can help me ease up a bit.
Currently if I'm asked by medical personnel how much I drink, I say about 5 portions a week, if that. I used to drink somewhat more.
If I drink, it's usually a drink combined with some "super food."
I read that in China they combine whiskey with matcha powder. I've tried that it's pretty good, depending on the quality of the combined ingredients of course!
I've also added turmeric powder to several drink and few times Mucuna Pruriensis powder.
So, it's kind of "cheating", I take something relatively bad and add something good to it to make it neutral. :D
In total, I wouldn't see alcohol to be a helping hand in most PE workouts.
Perhaps a momentary relaxation effect of it could make your ligaments a bit more loose, but overall I would stick to normal meal plans.
For many years I've drank alcohol for the different taste worlds certain drinks offer. Getting drunk, vomiting etc., not my bag! Few drinks, a cigar, relaxation with good music, that's more of my thing.