Jando S.
Yelp
The late night eats scene in San Antonio is already limited, so it's places like Tacos El Regio that carry the torch for folks looking for a bite in the middle of the night. There are two locations in the city, with this one smack dab in the heart of St. Mary's where they serve a nightly crowd of club goers and folks looking to avoid a hangover.
Some things that separate them from the average taco truck: illuminated signage, dessert options, English friendly food descriptions, credit card machines, and higher than average prices. The latter is an obvious nod to a gringo target audience, so Mexican food purists will need to taper their expectations before partaking.
Their self proclamation of "best tacos on earth" is likely in jest, but I do think they have items that are worth a look. Namely their "mini tacos" aka taquitos ($8 for 4), giant torta ($9), and charro beans . The esquite (ahem, "corn in a cup") was a bit watery for my tastes and the quesadilla ($3.50) is a solid pick. Meats are really limited to asada, pollo, and pastor but they also feature a bean and cheese taco, which at $2 is their least expensive option.
On their busiest evenings, the lines can get long and customer service can be a bit curt. The parking is extremely limited to side streets, so consider this El Regio only if one is bar / club hopping, or just randomly walking through St. Mary's looking for a late night bite.