Return to Mallory Square for performers and sunset viewing; the celebration begins about an hour before sunset and runs until after dusk (outdoor, free).
Quick morning bite and coffee — the Dry Tortugas ferry departs very early so travel light. Most ferry departures are around 7:00am; arrive 45–60 minutes before boarding.
Full-day excursion to Fort Jefferson with snorkelling, beach time and guided exploration; ferry typically runs ~7:00am–6:00pm roundtrip (seaplanes are shorter but pricier). Book months ahead in high season.
Choose a 2–3 hour guided eco-kayak through mangroves or a short reef snorkel trip — many operators run morning departures; good for birds, dolphins and calm water paddling.
Photo at the Southernmost Point buoy, then browse local shops/galleries on Duval Street for souvenirs; most attractions and shops are open through late afternoon.
Head to Key West International Airport or continue on your route; allow time for traffic and rental returns (airport recommended 90 minutes before flight).