Miami

MIA sits about 8 miles (13 km) west of the port — typically 20–30 minutes outside rush hour, longer on a weekend boarding morning. Uber and Lyft run roughly $25–$35 to the terminals; Miami's flat-rate taxi from MIA to PortMiami is set at $32 by Miami-Dade County. Shared shuttles (SuperShuttle, GO Airport Shuttle) run cheaper per person but add stops. Public transit (Metrobus 150 to downtown, then walk or rideshare to the port) works but isn't practical with cruise luggage.

Most PortMiami sailings open check-in around 10:30–11:00 a.m. and require all guests aboard 60–90 minutes before the published departure (typically by 3:00 p.m. for a 4:00 p.m. sail). Royal Caribbean, Carnival, and Norwegian use staggered arrival windows you select in advance — show up in your window, not before. Miss the all-aboard time and the ship leaves without you; the gangway closes on schedule.

On closed-loop cruises (round-trip from Miami back to a US port) US citizens can technically board with a certified birth certificate plus government photo ID under WHTI rules. In practice, bring the passport. If you miss the ship and have to fly home from a foreign port, the birth certificate won't get you on the plane. Non-US citizens always need a passport plus any required US visa or ESTA.

For boarding day, downtown Miami and Brickell win on logistics: both are 5–10 minutes from PortMiami by car, and many hotels (InterContinental, JW Marriott Marquis, Kimpton EPIC, Novotel Brickell) run cruise shuttles or have transfers built into packages. Miami Beach is more fun the night before but adds a 20–35 minute drive across the MacArthur Causeway in cruise-morning traffic. If you want one walkable evening before boarding, pick Brickell.

PortMiami's terminal garages charge $25 per day (cash or credit at exit), with covered parking adjacent to each terminal. For a 7-night cruise that's $175 — convenient, but off-site lots near the airport (Park 'N Fly, The Parking Spot, Park Shuttle & Fly) charge roughly $10–$15 per day with a free shuttle to the port. The terminal garage wins for one-way trips and short cruises; off-site wins on anything 7+ nights if you don't mind the shuttle.

If you have one afternoon: Wynwood Walls and the surrounding gallery district (about 10 minutes from the port) for street art and a long lunch, or Vizcaya Museum & Gardens in Coconut Grove for early-20th-century Italianate excess on Biscayne Bay. South Beach and Ocean Drive are the obvious move but eat 90 minutes in causeway traffic each way. Little Havana's Calle Ocho is closer and gets you a cafecito and a cigar shop without the parking nightmare.