is it ok to have a beer or two the day before upper eyelid surgery?

Upper eyelid surgery rarely presents with any bleeding problems, however we generally recommend avoiding alcohol ,aspirin, and other substances that can contribute to increased bleeding and the bruising that accompanies it. I would tell you it is best to follow your surgeons instructions regarding this

It is best to ask this question to your surgeon.However, in my practice, a beer  or glass of wine with dinner  is fine to consume, and may help you relax a bit before your surgery.

To help promote optimal wound healing it is best to avoid alcohol consumption prior to and immediately after surgery. Additionally, for patients who smoke cigarettes, it is recommended to discontinue tobacco use for a minimum of two weeks prior to surgery and a minimum of two weeks after surgery.