I live in a land where people practice many different religions and celebrate different holidays this time of year. Some people are super sensitive and no one wants to offend anyone so you end up saying "happy holidays" so as to cover the whole broad spectrum. Sean just told me a friend of his knows people who celebrate the winter solstice. Personally, I would not be offended if someone said to me, "Happy Kwanzaa!" It might throw me for a minute but i think I'd be tickled and would hopefully say it back. I think it's ok to specify which day you celebrate and what you call it.
That said, I can understand though that people want to be sensitive to others. Last year I found myself in such a situation. I have some neighbors who are from Bangladesh. They have a cute little girl named Somar (? i think. She told me her name from her balcony 4 floors up from next door) and we say hi to each other often. Anyway, i ran into her last year a few days after Christmas and when I said hi, I said "So, are you having a good..." UHHhhhh... i was going to say "christmas" but then that thought entered my mind: oh hey, she might not celebrate Christmas. I don't know what she celebrates. What do I say? So in my befuddlement I heard myself say, "So, are you havin' a good...time off from school?" pbdrrr... ha ha.
In conclusion, I'm not sure what the point of this post was, other than to tell you that story because i thought it was funny. I guess i'm just trying to say Happy Holidays to you and also Merry Christmas. :)