This is where the San Antonio River Walk turns up the heat on Mexican food. Whether it's breakfast, lunch, dinner or late-night tacos, Rio Rio Cantina will indulge your cravings with a fiesta of flavors. Our fresh Tex-Mex recipes with ingredients from farm-to-table and our homemade flour tortillas bring the taste of Mexico across the border to you. Happy Hour daily 3 - 6 p.M. And 9 p.M. - 11 P.M.