tamales -- perfect Xmas food

I'm going to head to SF tomorrow to find some chicken tamales. It isn't Christmas for most Mexicans and some other latino cultures without some kind of masa food like tamales, pupusas, huaraches, etc. For me, it's tamales. Weirdly, my Irish dad loved tamales. When I was growing up in Chicago, in the fifties and sixties, there weren't a lot of Latinos. There are now!  My childhood neighborhood has all the signs on stores in Spanish.  My dad would have scoped out every tamale joint.

My challenge, tomorrow, is to find some because so many will be out buying tamales tomorrow. And which places sell the best ones?

When I lived in Mountain View, I bought tamales from a woman who sold them outside the Walmart. There was a bus transfer statin at the front of that Walmart. I didn't actually shop there. On Xmas Eve, or the day before, I'd go looking for the tamale lady. That gal make awesome tamales but she'd sell out fast.

All the good ones sell out fast. So do I arise early and just go to the Mission and wander?

Or do I skip tamales? They are gluten free, can easily be had dairy-free, so they fit my nutritional goals. And I want some.

The Mexi joint around the corner took orders until Dec 20th and I missed the ordering. I swung by today -- they aren't open tomorrow - and asked if they were selling to any who had not pre-ordered. Nope.

But in SF's Mission, there will be tamales available if I know where to look. Where to look?