I agree don't take the turnpike...shoot over to I-95 it takes about 2-3 hrs to Miami.
There is a nice outlet mall at Vero Beach if you are not already shopped out!
Enjoy the cruise
Alexandr Pushkin, Carnival-Holiday, HAL-(old)Westerdam, Orient lines-Marco Polo, Royal Olympic-Olympic, NCL-Dream, Dawn-Princess, ACCL-Grande Caribe, Oceania-Insignia (3), Regatta(4) Marina (1) St Lawrence Cruise Lines-Canadian Empress
Scenic River cruise June 11,2012