Hi Ozman
You would be very surprised as I was last year. If you were going on a coach trip via Dover, The amount of coaches lined up, waiting to take folk over in to Europe going away for the festive period. Last year I went to Austria, And, I am doing "The Austrian Christmas Delights" trip again this Christmas.
It was great to go to a Country, that still believes in their traditional customs. Walking round Salzburg on Christmas eve when the temperature was - 8. Seeing people ice skating in an outdoor rink, and walking round the Christmas markets. Is an experience to see on its own.
I am sure where ever you pick. You will have a fun time.
Good Luck Andy