I can't remember, but to be honest, I don't think I've ever heard a retailer in my entire life wish someone "A Merry Christmas"...it's kind of hard to tell if someone is Christian or not just by looking at them, so they usually play it safe with a "Happy Holidays" or something. Maybe it's because there are so many more immigrants coming into the Bible Belt area these days that you guys are just starting to do what we've been doing for years. I would guess that 10 - 20 years ago in the Bible belt, you could wish someone a "Merry Christmas" and 99% of the time, you'd be correct in assuming they were Christian. Maybe now that you are getting more non-Christians, you've adopted a "safer" approach. I'm also still unsure how what a checker says to you has any sort of impact on Christmas.