When you drink about 1 glass of wine/mead/cider you get a little boost in magic/bard/alchemy type things, and with beer you get boosted con and str at first, then if you drink more e.g. a couple of beers your str goes up and your per and agl/dex go down or with wine/mead/cider your int goes up and your per and agl/dex go down. Eventually if you get too drunk your stats all go in a huge decline like when you've just been to the cross, until x hours. Eventually if you continue to drink you're too drunk to move type of thing.
Discuss