I love Tacos El Gordo, its fresh and simple mexican food. For ordering stand in the line according to the meat you want, you want pork , stand in the line in front of the huge spinning pork meat on a spic. Steak stand in the steak line, look for the signs. When its not busy it doesn't matter, but when this place is rocking, the lines are 5-7 people deep, standing in the wrong line cause issues.
I have had the steak and pork tacos, both are great. If you are near the Wynn, try this place.