Mike,
We know that drinking alcohol is not a sin as Paul said to Timothy, 'Stop drinking only water, and use a little wine because of your stomach and your frequent illnesses' (1 Tim 5:23 NIV). It was legit for Jesus to turn water into wine and for them to drink it (John 2:1-11).
However, excessive drinking of alcohol is a sin: 'Don’t be drunk with wine, because that will ruin your life. Instead, be filled with the Holy Spirit' (Eph 5:18 NLT).
However, if my drinking alcohol causes another Christian to stumble, I will not drink alcohol. See Rom 14:20-21 (NLT):
20 Don’t tear apart the work of God over what you eat. Remember, all foods are acceptable, but it is wrong to eat something if it makes another person stumble. 21 It is better not to eat meat or drink wine or do anything else if it might cause another believer to stumble.
Oz