Mark, years ago I would do the exact same thing your doing, go in and catch up on stuff. If the truth were known, it was because I could not think of anything else to do with myself. I would figure, since I'm here, what the heck, I may as well open up.
I can not ever recall making any kind of a sale on Thanksgiving, Christmas, or any other major holiday that I was foolish enough not to observe.
After doing this for a few years, it dawned on me, it makes me look desperate to anyone driving or walking by. I don't think I was desperate for money at the time, perhaps I was, can't recall.
That was not the real reason I was there, it was because I didn't know what to do with myself on a completely free day off. I had done all my domestic stuff on my real day off, what the heck could I do with myself on Thanksgiving day?
Everything else was closed, couldn't go shopping, didn't want to take my boat out, what the heck, I'll go into work, catch up on things.
Do yourself a BIG favor, close up your freaking shop, go buy a good book or rent a movie. Get yourself some tasty snacks, and take a day off. This will help create the illusion, with the public, that business is indeed good, and you are NOT hanging on for dear life.
If books and movies don't cut it for you, do something else, ANYTHING except "catch up on a few things" at work.
All this sound advise I am giving you comes from over forty years experience in this industry. Don't make yourself look like a lonely, desperate for money, idiot.
GO HOME!
John