We hiked to the condominiums from the docks, waited briefly for our luggage to arrive, then hiked back down, had dinner, and rented bikes for 24 hours. We biked around the perimeter and explored the interior of the island the whole next day, returned bikes, and hiked back up the second night. Then hiked back down the following morning and visited the fort and other historical sites the following morning and took the ferry back around noon. It worked out perfectly!