On the advice of some fellow cruisers I used the Ft Lauderdale water taxi prior to my cruise. For $5 you can ride all day and enjoy the sights of Ft lauderdale and see how the other half (the RICH ones!) live.
I picked it up just a short walk from the Embassy suites under the causeway and rode up to the A1A beach area, walked around and had lunch then rode back. Probably the best $5 I've spent in a long time. Highly recommended.