I know that one of the owners of Cisco Brewers on Nantucket doesn't drink at all for a similar reason.
Health should be the most important aspect of this decision.
I don't believe you should have to drink in order be in this business.
Does a heart surgeon have to have heart surgery to be a good heart surgeon?
As long as you have people in the company that know what they are doing... you should be fine.
Good luck and stay healthy!