Some people are infuriated by the phrase, "Happy Holidays". As you may have guessed, I am not one of them.
People have actually stopped doing business with a company simply because the use the more generic well-wishing, instead of specifying a certain holiday -- yes, usually Christmas. (For that matter, heaven forbid you should use the abbreviation "Xmas". No; we must keep Christ in Christmas!) Seriously, though. Why in the world would you stop associating with a business because they choose to acknowledge that Christmas isn't the only holiday in December? I can think of three right of the top of my head! Do we stop doing business with a Canadian company because they dare celebrate the birth of their country three days too early?
So, though I will be celebrating Christmas, though I have celebrated Christmas and no other holiday my entire life, and barring some really surprising development in my future, will celebrate Christmas only for the remainder of my life... Happy Holidays! Or if you prefer, Happy Holiday of Choice.