I read about Holidays on Ice by David Sedaris some years ago, and two Christmases ago I got hold of a secondhand copy (frugal and less wasteful!). It’s not exactly going to put you in the festive mood, but it is a great read. Santaland Diaries makes me laugh out loud. I haven’t been a Christmas elf, but I spent many, many festive seasons working in large department stores and I have seen and heard a lot.
If you’re looking for a darker, not always funny but eminently readable Christmas book I can recommend it. There’s not a lot merry and bright about the book, but it does make me think about Christmas and how 99.99% of the time the “Christmases” which are marketed to us are designed to make us feel bad. This book is an excellent antidote to that.