There is no right and no wrong way to celebrate Christmas. At least, where Christmas is concerned you do not have to stay with the traditional ways. After all, one of the major messages of Christmas is peace and goodwill. It would be absolutely wrong to start introducing rules as to what constitutes an acceptable form of revelry, above and beyond those already laid down by the law of the land. As long as you stick to the laws which exist, your Christmas can take any form you deem acceptable.
That said, there is a reason that the traditions have become traditional. When the first Christmas mince pies were produced, it is likely that the baker who cooked them had no idea just how much a part of Christmas they would become in many countries. People eat them, however, because they like them. Equally, it is not essential to have a tree in your house for the Christmas period – but people do, and have done for many years it does give a certain festive cachet to the whole occasion.
The main thing to keep in mind about the festive period is that people are supposed to enjoy themselves, and this should not be controlled by an insistence on maintaining traditions. The one tradition that should always be upheld at Christmas is that people are kind to one another and find a way to get along, even with those people they would ordinarily not speak to. As for the rest of it, people will find their own way.