This time of year many Christians take issue with people saying "Happy Holidays" instead of "Merry Christmas!" The fact is "Happy Holidays" would be more appropriate prior to the ACTUAL Christmas season! Tomorrow marks the 4th Sunday in ADVENT, not Christmas! Next Friday night/Saturday morning at midnight for "Midnight Mass" is the Christ Mass which truly brings in the Christ Mass season which lasts through Epiphany (January 6th). So, for one more week we Christians are celebrating the holy days (holidays) of Advent, a season of penance and anticipation of the coming Messiah. One will note that many of the readings for Advent are about the Second Coming of Christ - which we truly are in anticipation for.
So, don't be offended if someone says "Happy Holidays" to you - they are wishing you to have happy HOLY DAYS of Advent (and most likely are "wholly" unaware of it). You might consider answering them, "Why thank you very much! I hope the rest of your Advent is full of blessings too!" THEN wish people a "Merry Christmas" throughout the REAL Christmas season! Leave your decorations up through January 6th! Enjoy the TRUE spirit of the Christ Mass! Consider that the "Twelve Days of Christmas" do not come before the Christ Mass - but AFTER!