Went mid-April and had a surprise, a themed cruise: baseball greats.  My husband was the busiest I've ever seen him on a cruise.  The player "greats" were very personable and fun, he didn't miss one of their talks.  Ports were wonderful:  Puerto Rico, St. Maarten, Grenada, Barbados, Antigua, Tortola, Cayo Levantado/Dominican Republic.  Lots of sunshine, gorgeous water, friendly people.  Overheared some passengers complain about port "smells" on some islands.  They're self-contained little dots in the ocean, so sewerage containment, etc. can play prominently some days.  Great shopping...