Miami Cruise Terminal Guide: What You Need to Know (2021) PortMiami. It provides cruisers with all the information they might need to know. Known as the “Cruise Capital of the World”, Miami cruise port is the largest and busiest in the world and is part of PortMiami’s 518-acre site. It makes sense to know which cruise terminal your cruise will depart from, and what amenities are available. PortMiami cruise terminals are among the best and most modern in the world. They have to be, as they need to accommodate over 6.8 million cruise passengers and their luggage in a speedy, secure and efficient manner! The port deals with 55 different cruise ships from 22 different cruise lines each year.