During the canyon shuttle season, ride to stop #6; Zion Canyon Scenic Drive is closed to private vehicles while the shuttle runs. Outside that season, private cars are usually allowed on the road, though the dates change each year and park lots often fill early. The Grotto has picnic tables, flush toilets and a bottle-filling station. The shuttle buses are wheelchair accessible, but access from the stop to individual tables and other facilities is not described. Check with park staff if a step-free route matters to your visit.