I am only mentioning this for you. I wouldn't take a girlfriend here unless we had been dating for over a year and a half.
This is a strip mall taco place near the Wynn, but they make it right in front of you. Real sugar Pepsi. Don't put your eyes on the cashier because her dad?/cook doesn't like it. Kind of a bad neighborhood(don't go at night) but I was never disappointed with the food.
La Costa
870 Sierra Drive
PS Not trying to say this is spectacular but is better value than paying 11$ for a turkey sandwich at the Wynn.