Big Cypress National Preserve is open 24 hours a day year round. Visitors can enter or exit at any time. To stay overnight, visitors must be in a designated campground site or in the backcountry with a valid permit . From time to time, the superintendent implements area closures to protect resources, or to ensure visitor safety. When necessary, park rangers will issue citations to persons violating the terms of a closure. The Big Cypress Welcome Center (closed on Tuesdays) and the Oasis Visitor Center (closed on Wednesdays) are open six days per week from 9:00 am to 4:30 pm. Both facilities are closed December 25. The Off-road Vehicle Permit Office located at Oasis Visitor Center is open Thursday through Monday from 9:00 am to 4:30 pm. The office is closed December 25. The Preserve Headquarters Office , located in Ochopee, is open Monday through Friday from 8:00 am to 4:30 pm. The office is closed on all federal holidays.