A 2026 Caribbean packing list should focus on "Reef-Safe Protection" and "Breathable Utility." Essential items include mineral-based, reef-safe sunscreen (now legally required in many islands like the USVI and Aruba to protect coral), a wide-brimmed hat, and polarized sunglasses. For clothing, stick to linen and moisture-wicking fabrics to combat the 85% humidity; you’ll need at least two swimsuits, a high-quality "rash guard" for snorkeling, and one "island-formal" outfit for upscale dinners. A 2026 "pro-tip" is to pack a waterproof "dry bag" for boat excursions and a universal power adapter (while many islands use US-style plugs, some like St. Lucia or Barbados use UK-style). Don't forget a small "medical kit" with bug repellent (DEET-free is better for the environment), anti-itch cream, and rehydration salts. If you plan on hiking in places like St. Lucia's Pitons or Puerto Rico's El Yunque, pack a pair of lightweight, "breathable" sneakers rather than heavy boots, as the heat makes leather footwear very uncomfortable.