119 E. 18th St.
OpenTable 30 days in advance
Walk-ins with texting
What to order: yellow queso, puffy pork tacos, avocado margarita
Personally, my favorite taco + marg spot in the city with real Tex-Mex queso. They take reservations, but you can also put your name in and grab a drink at the bar. Happy hour specials are ideal.