Enjoy Mariachis, Flamenco guitar, singing, dancing, and a cool drink or snack as you help support children’s charities through your attendance at the 64th season of Fiesta Noche del Rio, Fridays and Saturdays at 8:30 pm from June 12-August 8 at the Arneson River Theatre in La Villita (418 Villita St.). It’s fun for the whole family. Tickets online (fiestanochesa.com) or HEB (Customer Service).