Its a pretty chaotic place during your first visit. I have to stand in different lines for what I want? Where are the drinks? How do I pay? What do I do? I actually watched a couple walk in, stand aimlessly in a line for a minute, say something - then leave.
But once you get over that, these are some of the best tacos I've ever had - and believe me there is an extensive list of competitors. Top notch food and the price is right. Its usually slammed at lunch so get there early.