Lake Casitas Recreation Area near El Rio offers full RV hookups, spacious pull-through sites, and a marina setting ideal for trailers that need reliable utilities and easy boat access. Emma Wood State Beach provides beachfront camping and easy access to sand and surf with walk-up and drive-up sites that work for short-stay trailers seeking scenic evenings. For full-service options, Ventura Beach RV Resort features full hookups, level pads, and some pull-through sites that simplify arrival and setup from El Rio. Each park has different reservation rules for towable setups, so confirm hook-up availability and site dimensions before arriving from El Rio.