I have drunk a little, moderately and quite a lot.
A little and moderatley have been ok, although I have found it really affects my sleep. I feel exhuasted the next day, a bit depressed and anxious.
Last week I had one of about three benders. I didn't bring out the best side of my personality lets just say that. And I have no idea how I got home. A complete black out. That's not a safe place to be in a busy city, stumbling around unaware of what is going on. Somehow I made it home but I dont' remember. I don't recall what happened and its not a nice feeling. I was so ill the next day I couldn't go to work. It took about three days to be able to sleep properly, I spent the weekend recovering still.
I have found BEER much worse than other drinks, so my advice would be do drink (if you want to) but keep your quantity down. After about three drinks I lost all track of not drinking and the next thing was being off my rocker.
Last thing you want is causing a scene at a wedding.