These are 9 things I wish I would've known before my first Caribbean cruise. We went on a Caribbean cruise on the Royal Caribbean Jewel of the Seas which was a 7 day cruise that started in Puerto Rico and then went to several islands including St. Thomas, St. Kitts, St. John's (Antigua), St. Lucia, Barbados, and then ending in Puerto Rico again. We had a blast! And we learned a few things too. So here's a few things to know when you are cruising for the first time. I hope what we learned will help you . . . happy sailing!