Taxi and rideshare can work well for a simple MIA arrival with light luggage. A prearranged private car becomes more useful when the party needs a specific vehicle, has several bags, is traveling with children, or wants the pickup and destination settled before landing. Renting a car is most useful when independent driving will continue throughout the stay.

Start with your actual Miami Beach destination
South Beach, Mid-Beach, North Beach, Bal Harbour and nearby coastal communities are not one interchangeable drop-off. The property address, arrival time and luggage influence the practical choice.
Taxi and rideshare: practical for simple arrivals
On-demand options can suit a solo traveler or couple with light luggage who is comfortable arranging transportation after reaching the pickup area.
When a prearranged private car makes more sense
Advance service is most useful for families, groups, substantial luggage, cruise connections, business schedules and travelers who prefer a defined airport plan.
When renting a car is worth it
A rental car may suit visitors planning frequent independent trips outside Miami Beach. Hotel parking, valet costs and how often the vehicle will actually be used should be part of the decision.
Luggage, children and group size change the answer
A legal seat count does not guarantee that all suitcases, strollers and other items fit. Vehicle planning should account for passengers and cargo separately.