Nobody would claim this is great food. But it's very edible, and you get lots of food.
Here's the set-up. Walk in and order from the giant board of burritos, tacos, tostadas, quesadillas, taco salads, nachos and combo plates. Choose from 4 types of chicken (chile verde, mole, asado & chile colorado), chile verde pork or carnitas, carne asada or ground beef. Then there's beans: black, pinto, refried (all vegetarian). There's grilled veggies, and the option to swap in spicy garlic prawns or mahi mahi.
Prices range from $3.50-$9.50, most in the more expensive range.
Just like in a Mission taqueria, you follow your food down the line, so you can specify none of this or more of that, as you wish. (Unfortunately, that's where the resemblance to a Mission taqueria ends) Pay up, and take it back to your table. That's it.
In spite of having a small play area, this is not overrun by children, so it's quite pleasant for the child-averse.
They have maybe a half dozen beers on tap, and, of course, many margarita options. It's non-smoking until 9:30 pm.
Of course, there are downsides. If you want a beer or a drink, you'll need to go into the bar and purchase it, separate from your food. Getting a seat on the sidewalk is hard during good weather—it's popular. There is exactly one table salsa, and it's nothing to write home about.