Hire a car for the day, go shopping and have a leisuerly lunch and then drop the car off at the airport. I can provide a list of car hire places close to the port if you wish.
You could go on an excursion and airport drop off, we did it from fort lauderdale it was excellent, .
I also would suggest hiring a car you can take the complimentary bus which will take you to two or three car hire companies. Go shopping at the Aventura Mall its enormous but keep a track of the time. When ready just drive to the airport (it would have cost you nearly $50 anyway by taxi). When booking your car ask for a airport drop off its simple.
I'm with two of the others, I would rent a car for the day and go to Sawgrass Mills Shopping Mall or for an Airboat ride in the Everglades or walk around the Las Olas district in FL or a ride down to the Art Deco region of Miami. Arrange it so that you can drop your car off at the rental place at Miami Airport. If you have a Sat-Nav that you can use in the States take it because it makes life so much easier. Failing that, take the transfer or a cab to the Airport then either check your luggage in or leave it at the Left Luggage station in the airport then go round to one of the hotels nearby like the Sofitel and spend the day around the pool there. One more thing for £20 each you can buy a place in an executive lounge at the airport, there is one on the outside of the Concourse F and one through security. There you can relax in comfortable chairs, have a small snack and drink free until your flight is boarding. You can spend up to 3 hours in there, and more if your flight is delayed. Just make sure that if you choose the one inside security that you are in the right concourse for your flight. .... Neil.
I would get on a bus or hire a cab and go to South Beach in Miami for a lovely walk along the seafront. There are loads of Art Deco buildings, shops, restaurants and bars. It's a beautiful wide stretch of white sand beach with turquoise water, if you just want to relax in the sand. And then there's just people watching as well.
My other half and me were on the freedom of the seas nearly 2 years ago now. We dismebaked early and excursions were layed on, we chose the everglades. then afterwards we were dropped at Miami airport. It worked out very well.
We fancy doing the Everglades,the ship's pre booking excursions for the last day is showing closed,nor sure if that means all excursions are gone or you can only book the last day when on the ship,so if all gone,are there places off the ship where you could book the eveglades?
If the excursion is showing'closed', then yes maybe they dont release the excursions at miami until the last evening aboard your cruise ship. The everglades passed away a couple of hours- not long enough really- we still sat in the airport for about 6 hours, but hey! it was still agreat experience and i also highly recommend the Freedom of the Seas ship if you ever decide to cruise aboard a mega liner.