Any vegetarians/vegans out there?

"Are there any veg friendly places?"....
Hello Ellis108

1st off, I have been a a vegetarian type regimen since the early 1970´s.....
The answers already mentioned are a couple.
Besides those, off the beaten path, on the street where Tel Mex is, there is one incognito house that also serves vegetarian cuisine.
Pizza can also be "vegetarian" depending on the toppings, unless you don't eat cheese (dairy products.).
Some of the typical antojitos Mexicanos such as bean tostadas, enchiladas con queso (SANS pollo), chili rellenos, camotes, plátanos, órden de papas, cebolla cambray asada, etc., are apt for vegetarians, keeping an out on the ingredients, e.g. in the tostadas, enchiladas, c.rellenos, that they don't put any pollo, or, other meat in them.
Make sure that if U choose frijoles guizados, that, the don't use manteca de cerdo.

So, in summary, although there aren't really many places I would classify as "Vegan / vegetarian", many foods are available, (keeping an eye out for the ingredients), there is, in effect, fare for us vegetarians.

"Even a place that doesn't use lard in their beans and is willing work with us is helpful."
You will need to ask.
Frijoles refritos are the most common, but some places may offer frijoes "de la olla", which most likely will NOT have lard used in their preparation.

"If you're a vegetarian or vegan, say howdy, even if you don't know of a place."
Yes, I am one of the few......

I really doubt if there is more than 500 people, in this city of approximately 100,000 population that are vegetarians.
Just look around, it's obvious the type of diets people eat here.
7 out of 10 are overweight, some of those being obese.
México is one of the world leaders in overweight kids.