Quote:
"Seasons Greetings" is a fixed term. You can interpret it as Merry Christmas, Happy Hanukah, Happy Kawanza .... Just disregard grammar. This is what is printed on the Christmas cards and it is really nice when you are not quite sure of your friends' and neighbours" religious tendencies. In short - politically correct wishes applied to the end of December.
About the quote above, how do I know if it is not a grammatical mistake? How do I know when to disregard grammar? How do I know if one didn't make it up?