As one who never has had to work on such holidays I would like to echo muddy-blues comment that your work is very appreciated by many even if it is not often spoken out loud. Thanks to all who do the jobs that must still be done at these times.
I guess my Christmas isn't as disruptive as other people's are, although still not much fun. I still get to spend it with family, rather than be away altogether, although I can't quite join in with the merriment! Here's to those were it's just another working day.