Do you keep a mood chart, and if so, is there a place to track consumption? Mine does, and damn if there isn't some correlation, mapped out right in front of me. I found a few of things (for me) about drinking...

* It's unpredictable which way I'll go. The substantial majority of the time, I get very fun to be around, lol, but sometimes I go really morose. REALLY morose. (No meanness or anything, but the morose route is gawdawful.) This is both before and after I started taking meds. (Downright bipolar, eh? )
* I seem to feel the effects of the alcohol more strongly/quickly since meds. In general.
* More than a few will produce a major "mud-brain" for me the following day. I don't remember this happening before meds (at least to the same degree). It's not "hungover", I'm just in a total fog and can't put a thought together to save my life!
* I sometimes take a bit of alprazolam for sleep. And sometimes forget not to do this if I've been drinking (very bad I know!). But I mention it because it seems to really up the chance of having a hangover, even with quanities that would not normally give me one. (Haha, once I made the connection, I was better at remembering not to, that's for sure! Because I loathe loathe loathe them, and have always made a point to not "go there.")
* When my meds are keeping me on a particularly good keel, I'm less inclined to drink at all. While I do aim for only occasional (because it's gotten a bit too reflexive for me at some points in the past, and that is really not good, esp. w/ meds!), I really don't see not doing it at all. That's just me.
* The correlation on my mood chart is not necessarily the very next day.

Seems worth putting it on a mood chart. That would probably really help you get a much better feel for the answers to your questions. Because everyone's different. (But I hope my experiences are of some help, because that last one was especially familiar. Tell ya the truth, it'd be my guess that Saturday was the one most instrumental in Monday's state.)