If there are two things I can't live without and doctors love to forbid you are alcohol and coffee. Without coffee I'm not able to function and that's been all my adult life way before I started taking meds. I drink about 3 cups a day on work days, and when I was on quetiapine I drank about 5 cups. It doesn't affect my mood, it wakes me up and gives me energy, in facto if I DON'T have coffee I get irritable even if I'm not that sleepy. I don't see anything wrong with coffee unless you have stomach problems. I have a colon problem but strangely coffee doesn't give me pain.
About alcohol, it's a problem to me, I think I was close to become mildly alcoholic, I never drank everyday but I used to binge drink sometimes, blackout and done really stupid things and exposed myself into dangerous situations. So now I try to contol my drinking and I haven't binge drank for like a year, I did blackout on Halloween but it was a kinda mistake. The thing is that alcohol in normal doses makes me feel good and sociable, but I think it's due to other issues. Also my family always gathers around alcohol, they aren't alcoholics but family time means drinking wine and stuff. I once was made to stop drinking and I did for like 8 months but all felt kinda dull. Small amounts of alcohol aren't damaging IMO if you aren't driving of course or taking strong pills like benzos because you can blackout. Moderation is the key.