A friend of mine from Flagstaff puts away quite a bit of booze every day but still manages to climb rock at a very high level, bikes like a madman, charges the backcountry, holds a good job as an X-ray tech, owns his own home, blah, blah.
So perhaps for him, his drinking isn't a problem.
Here he is raging desert towers.
http://fritzrips.com/v-web/gallery/a...dona/des_3.jpg
http://fritzrips.com/v-web/gallery/a...edona/des2.jpg