We got off our cruise and took a taxi to South Beach to kill a few hours. I used google maps on my phone and it said to take a bus and the metromover to get to the airport. The bus was gross with all sorts of foul smelling homeless people so we were a little worried when we got on the metromover. The bus drops you off at a terminal where you have to enter a building purchase a pass from a kiosk then go up an escalator. The get on the northbound orange line not the green line. This will drop you off at the airport transit terminal where you still need your pass to take another smaller shorter ride on a metromover that will take you right to the airport. $2 a trip or $5 for an all day pass cannot be beat. We could not understand anything said on the intercom on the train, but there were signs and it was clean for the most part.
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