In 2026, the dress code for Caribbean cruises has shifted toward "Resort Casual" and "Wear Your Best." During the day, the standard is swimwear (with a cover-up indoors), shorts, and t-shirts. For the evening, most mainstream lines like Royal Caribbean and Carnival use a three-layer approach. Casual nights allow nice jeans (no rips), polos, sundresses, and chino shorts. Smart Casual nights step up to slacks, collared shirts, and blazers. For the 1 or 2 "Formal" or "Cruise Elegant" nights per 7-night sailing, guests are encouraged to "dress to impress" with cocktail dresses, suits, or evening gowns, though full tuxedos are becoming rarer. It is important to note that swimwear and bare feet are never allowed in the main dining rooms at night. Packing tip: bring a light cardigan or pashmina, as the ship's air conditioning can be quite chilly compared to the humid Caribbean air outside.