Last Magnolia: 2011

Read the menu before you get in line
It's not called kwesso
What's a taqueria? Who cares? There's a menu outside. Fucking read it.
Pick your meat and Mexican style of meat/cheese-delivery mechanism (I'll make it easy for you, get the chicken tinga on a tostada or a super burrito)
Tell the first guy taco/burrito/super-burrito AND the meat (I think the only reason they ask you what kind of meat so they can get shrimp in the fryer for you, since everything else comes off the line)
When they are making your meal, give it all to them - they go faster that way instead of having to interrogate you every step of the way. Know your beans by name - they have four kinds - pinto, refried, black beans and refried black beans. They know the salsa fresca as either pico or salsa, so don't worry about that.
Move down the line so the next person doesn't have to wait any more than necessary through your indecisiveness and ignorance about what a certain bean or vegetable is called.