I've only left the ship at Freeport once, and I've had it on my itinerary many times. Port days are spa days for me (book early) and I've also enjoyed the smaller crowds.
Need some cruise help?
Carnival Dream November 2015
Carnival Sensation February 2015
Carnival Fascination, April 2014
Carnival Sensation 2008
Carnival Imagination 2007
Royal Caribbean Sovereign of the Seas 2006
Carnival Sensation 2006
Carnival Miracle 2005
Carnival Glory 2004
Carnival Fantasy 2004