Think after the op is mostly because it won’t make you feel good and you’ll probably feel crappy mixing it with meds, and before the op is due to it thinning your blood you’ll not heal as well and you can lose a lot more blood which means more bruising, I went out 12 days before my op and had a last night out and got pretty wrecked but I’ve been fine, I don’t know about a few bits here and there though. I’m not even thinking about drinking for a while anyway just want to get feeling 100% first before I have to deal with a hang over x