Alamo Pickup Location near POM

It is my understanding that Alamo runs a free shuttle from the Port of Miami to their location to pick up a car following our cruise. Does anyone know the Alamo address in which the car must be rented from? When I do a search there is an address on Collins Avenue in Miami but there seems to be a closer location at the Downtown Intercontinental Hotel on Chopin Plaza (don't know if that's a full service location either). The car rental prices are similar at both locations but I'd prefer a free shuttle to a $15 taxi ride to pick up the car. Anyone have any experience with either?

My research has shown that the shuttle goes from POM to MIA only. This is my plan, to rent from MIA.

Just used Alamo in September....they only run the shuttle from POM to MIA. If you use the one at the InterContinental, you need to taxi or Uber it back to the port. It was fast and painless booking through the MIA location...booked it again for next August!