Three words: Carne Asada Fries
Do yourself a favor and order two. This is one of my favorite stops in Vegas to get yummy and delicious food for a fraction of the cost of ANYTHING you would get on the Strip. The quality and selection is up to par with what you would get in San Diego so I always make it a point to stop in whenever I am in town.
The line moves fast, the restaurant has tons of open seating and all of the workers are so friendly. Plus? You can save all of your $$$$ for all the hoodrat stuff you got going on later!