Like McDonald's, though, there is a lot on the menu that doesn't fit into a combo meal. Cinnamon chips. An extra side of refried beans.

Even combo meals have choices--hard shell or soft shell? Which drink? Would you like any sauce with that? What kind? How many?

Then, of course, there are the "no onions" and "extra sour cream" orders.

Add in a language barrier and a busy DT. Everybody is likely to be frustrated.

At least your patience paid off with the shrimp taco.