If your December is pointed at the Caribbean — a cruise port day, a resort week, or an island-hop — now is the time to lock in the excursions before they sell out for the holidays. Island Routes runs the region's best-known catamaran sails, cultural tours, adventure excursions, and island sightseeing, and right now select owned tours are up to 25% off with promo code KS25 (or 10% off with KS10). The discount applies to December 1–31, 2026 travel, so there's room to plan the whole trip around the experiences you actually want, instead of settling for whatever's still open at the pier when your ship docks.

Excursions are where a Caribbean trip is won or lost, and I'd rather build yours around a great catamaran day or a rainforest tour than let you gamble on a crowded pier vendor. If you're already sailing or booked at a resort in December, tell me your island and date and I'll slot the Island Routes tours that fit — and make sure the discount is stacked on top of everything else you've got.