While Christianity has over 2 billion followers, Islam has nearly 1.6 billion adherents. Naturally, these are big festivals.
Here a photograph that shows Islamic Umayyad Chanting Association performing Mawlawi dances before the two major festivals in Damascus.
The other photograph shows a Bohra Muslim selling gifts and Santa Claus' dress at his shop in Mumbai.
In India also, we celebrate all the festivals. For us, communal harmony is foremost and it has been a tradition for us for centuries.
Best wishes to you ahead of the Festivals.