I'll add to the discussion that until a bartender friend of mine taught me about this a couple of years ago, I had no idea. I asked a few friends and family if

I'll add to the discussion that until a bartender friend of mine taught me about this a couple of years ago, I had no idea. I asked a few friends and family if they were aware of this and it was a real mixed bag. I think there are a lot of people like me who before groupon, never used a coupon at a sit down restaurant in my adult life, and therefore it was never something I ever had to even think about.