Carnival Liberty has a wide variety of shore excursions from fun adventures to romantic beach escape. In this trip, we had 3 ports of call: Key West, Grand Cayman, and Jamaica. (Be sure to check out my Carnival Liberty accommodation, and cruise deal posts.)
Sightseeing at Key West. I am told that there are over 100 points of historically interest in Key West. There are lots of cool museums and restaurants. It's still barely Florida. The weather was awesome, hot and humid. However, it can turn cats and dogs all in a sudden. (LP, don't worry. LG is here!) Wendy's was good enough to fix us a freshly brewed coffee.
Stingray sandbar tour at Grand Cayman. A short ride took us to the Northern South to board a boat that we sail to the world's famous Stingray sandbar. A sandbar is a shadow region in the middle of the sea with fine sand. We enjoyed petting and swimming with the stingrays for an hour or two.
Climbing the Dunn's falls and Dolphin Cove beach at Jamaica. The Falls is nothing compared to Niagara Falls, but this is how you can climb the falls.
After visiting the Dunn's falls, it is a very good idea to relax at the Dolphin Cove beach. (LP, what about a romantic couples massage at the beach?)