As to your first question, I have not much of a choice in talking to someone who is a winemaker. My oldest brother is a winemaker.

As a minister of the Gospel, I have witnessed to him many times, as has my mother and my sister.

I have also witnessed to some of his co-workers that visited his home the last time I was visiting him

I have found it is extremely hard to witness Christ to him and his co-workers because they have become drunkards because of listening to others tell them it is ok to drink in moderation. The alcohol they work so hard to make has deceived them to the point they don't know they are under the influence. But it is clear that they are, from slurred speech to belligerent speech to tipsy walking... and they don't even care.

Where am I currently? Deep South, USA... part of the Bible Belt.