The 2010 Maryland State Park Passports are now available online. A passport gets you unlimited day-use entry for up to 10 people in your vehicle at state parks with a 2010 Maryland State Park Passport. Buy it now online and use it for the remainder of this year. The passport is $75 for state residents, $100 for non-residents. You also get unlimited boat launching and a 10 percent discount on state-operated concessions and boat rentals.