Lake Casitas Recreation Area near El Rio provides full RV hookups, pull-through sites and a marina with a dump station—an excellent base for larger travel trailers. McGrath State Beach offers beachside campsites with level parking and basic restroom facilities that suit many towable setups. Lake Piru Campground features lakeside sites and RV-accessible parking, with scenic views and boat access for day activities. Each of these campgrounds balances practical amenities and natural settings, making them good choices for staging and unhitching while based in El Rio.