I'd suggest a shore excursion as the previous poster is right, the Free Zone is just a dropp off, pick up point for the cruise ships.
There is a shopping area in the terminal building, it isn`t huge, but it has a place that sells booze, coffeeéspices, and other general shops that sell a little bit of everything!!!!
MoBay is nice. You can try to find a tour operator online that will take you around and do what you want, but I am not sure if there is a size limit to the party...
2007 Victory & Triumph
2008 Conquest & Liberty
2009 Valor, Freedom, and Splendor
2010 Glory and Liberty
I gotta go where it's warm.....
Over 40 victim of fate.....