RGV Event Venue : Casa de Soles Event Center. Indoor and outdoor elegance and sustainability in San Benito, TX, serving Brownsville, La Feria, Harlingen, Rio Hondo, Bay View and whole RGV. Create unforgettable memories with us. Book now! Discover the beauty of a sustainable wedding. At Casa De Soles we empower you with the freedom to bring your vision to life by choosing your preferred vendors and giving you flexibility to take advantage of our affordable payment plans.