La Semana Alegre at Hemisfair was created to unite music enthusiasts and celebrate the cultural heritage of San Antonio. Held April 23-24, 2026, this official Fiesta event benefits Hemisfair, a nonprofit dedicated to revitalizing the historic HemisFair '68 site and creating a vibrant urban district. The festival showcases diverse musical genres on multiple stages within a world-class outdoor park venue in downtown San Antonio. Attendees enjoy traditional Fiesta cuisine including chicken on a stick, gorditas, and aguas frescas, alongside cocktails and beverages. The vendor experience includes a pop-up vinyl record shop, flash tattoo artists, and airbrush merchandise services. VIP packages provide exclusive access to lounges, raised viewing decks, priority entry, and happy hour food service from 5-6 PM. Single-day general admission tickets start at $20, with two-day passes at $35 representing the best value. VIP tickets cost $40 per day with limited availability. The event welcomes all ages, with children 12 and under admitted free with a ticketed adult. The festival operates rain or shine under the Fiesta umbrella, directly supporting Hemisfair's mission of community revitalization. Accessibility is a priority, with ADA-compliant facilities and accommodations including wheelchair-accessible public restrooms and easily accessed drop-off points. Attendees are encouraged to utilize VIA Park & Ride services to reduce traffic congestion, with rideshare pick-up and drop-off available at Martinez Lot on Cesar Chavez and S. Alamo.