I found this great shuttle service located in Ft. Lauderdale International Airport. The company name is Around the Clock Airport Shuttle, Inc. and their web site is www.atcshuttle.com. They offer express shuttle service to/from FLL to the Port of Miami ever hour leaving from all terminals at FLL. All rates are $15 per person 1 way transfers and same rate for return. No reservations are required. Their number is 772-336-2266 or e-mail at email@example.com.