Then take a cheap cab ride to the port from there. It would probably be a lot less expensive than paying for parking. then do the reverse when you return or Dollar rental car is even cheaper but their office is near the MIA airport which is quite a bit further from the port but they do offer a free shuttle.
Charlie Brown is the main character in the comic strip, Peanuts.
Happiness is a Warm Blanket, Charlie Brown is written by original creator Charles M. Schulz and adapted by Craig Schulz and Stephan Pastis, with art by Bob Scott, Vicki Scott and Ron Zorman.