Apologize for a feast day? Never. Enjoy them then go right back to plan. Festivities don't come every day it is fine to celebrate. It is awful that we have been made to feel otherwise.

So happy that you got a Christmas bonus and a nap. I have never felt that I should lie down for a nap in the middle of the day unless sick (like we feel we should never enjoy food) so I have never gotten into the habit. I wish I could. Research says it it so good for our brains and longevity.