Well, you can try. Go to Five on Friday. The first question is the only one with a clear-cut answer for me.
It's been "Happy Holiday" or "Season's Greetings" ever since I became an adult. Starting at Elmira College, which usually has a goodly Jewish population, and later, when I worked for American Optical in Framingham, Massachusetts, where Asian and Indian ladies detailed their winter lights celebrations, it became a must. Seems all cultures have a celebration of lights for the darkest, longest nights of the year.
And, hey, if you're willing to share your holiday with me, I'm willing to share my holiday with you.