Campgrounds are located at Davis Bayou in Mississippi and at Fort Pickens Area in Florida. Reservations are available through the National Park Reservation Service 1-800-365-2267, and will be taken up to five months in advance year round. Walk-ins will be accepted on a space-available basis. Primitive camping is permitted on Horn Island, Petit Bois Island, and East Ship Island n Mississippi. Primitive camping is also allowed on the beach at the east end of Perdido Key Area in Florida.