Get ready for Margarita Fest 2024 on July 27 at Lon C. Hill Park. The free event features food, local vendors, live music, and activities like Jurassic RGV and RGV Zumba.  The highlight of the event is the Margarita Contest, where eight local businesses and restaurants will compete for the title of Harlingen's Best Margarita and a $1,000 check.