Given who those two folks are, it doesn't surprise me that that topic came up at some point during your interview. They do hire non-drinkers. While I was there, the management folks, up to and including the CEO, came out on the road several times a year with company card in hand to keep morale off the floor, stop rumors, gather intel and spread gleeful hunkie dorieness. During your several hour long interview did you not discuss compensation (or lack there of), work rules (or lack there of), retirement plan (or lack there of), benefits (or lack there of) plans on how the company plans to grow and obtain new business (or lack there of)? If not, when on your next interview you might want to ask those questions too.