I've found that the offerings through the Cruise Lines are becoming more and more plentiful. These can easily be booked through your Travel Agent. Lots of people, however, prefer to have their travel agent book their tours directly through a local provider. Booking through the ship is very easy and can often be done right online.
Using a local provider requires a lot more planning around arrival and departure times than does booking through the ship. As a result, it's probably easier for a first-time cruiser to book the ship's tours to make sure they make it back to the boat on time! Local Tour providers, however, may book smaller groups and have a more personalized tour planned.
Key West might often be a first stop on a Western Trip and is famous for it's many bars and historical sights. Yes, they do have snorkeling and a Glass Bottom Boat ride which was really fun, but my suggestion is to book a seat on the Conch Train or Old Town Trolley and jump on and off all day as they take you on a tour of the entire Key. Hemingway's House, the Shipwreck Museum, The Key West Aquarium, and the Southern Most Point are all things you have to see at least once. After that, there is an awesome Pub Crawl I've heard of.....

Be sure to have a piece of Key Lime Pie and some Conch Fritters at least one time while you are there!!! And stop in to Sloppy Joe's Bar for a cold one!
Cozumel offers a ton of things to do besides lie on the beach, including deep sea fishing, snorkeling, sightseeing around the island, trips to the mainland to see the Mayan ruins, and - my favorites! - the ATV Jungle Tour and the Jeep or Dune Buggy Adventure Tours! The ATV tour takes you through the jungle areas to see some small Mayan ruins and learn the history of the area, followed by a tirp out to the beach for lunch and some snorkeling, and then a trip back to the ship. There are plenty of variations on the tours to accomodate your ship's intinerary. Good shopping here too!
Grand Cayman is home to Stingray City, which everyone has to do at least once!
(Never fear...These are not the same Stingrays that killed Steve Irwin!) These stingrays have been hand fed by humans since birth and live out on a sandbar off shore in waist deep waters, making them accessible to even the weakest of swimmers! Its a great family trip! Also, there are trips to the famous Turtle Farm, Rum Factory, and, of course, you can finally go to Hell!
(Really! It's the city's name! HAHA! :lol: ) There's lots to see on Grand Cayman and the shopping is good, too! As you can probably guess, I'm not one to lay around on a beach, so I like doing the combo tour that takes me to all the places I mentioned above!
Jamiaca rounds out a Western Caribbean trip and offers the usual parasailing, beach club day, and sightseeing tours. Some things they offer that are unique, however, are the trips to Dunn's River Falls, River rafting, and Tubing adventures. May favorite choice is to start off the day with Horseback riding on the beach, followed by some snorkeling, shopping, and sampling the Jamaican food. Dunn's River Falls is an excellent tour...but only if you are docked at Ocho Rios! From Montego Bay, it is a 2-hour bus ride each way and will eat up your entire day at port.
These are just some of the things I enjoyed while in the WESTERN Caribbean.
I 'd be happy to answer any questions about them.
I have not taken trhe EASTERN Cruise, yet, so I'll have to hold my thoughts on those.
:wave: