Yes, you can absolutely wear jeans on Royal Caribbean ships, as the line has moved toward a much more relaxed and "casual" dress code in recent years. For most evenings in the Main Dining Room, nice jeans without holes or distressing are perfectly acceptable when paired with a polo, blouse, or collared shirt (often referred to as "Casual" or "Smart Casual"). The only places where jeans might feel out of place are on designated "Formal" or "Wear Your Best" nights, where many guests opt for suits, tuxedos, or cocktail dresses. However, even on these nights, dark, well-fitted jeans are usually tolerated as long as you look "put together." The strict "no jeans" rule of the past is gone, but there are still a few "hard" rules: you cannot wear swimwear, tank tops, or go barefoot in any of the indoor dining venues or specialty restaurants. For 2026 cruisers, the best advice is to pack one pair of versatile dark jeans that can be "dressed up" for dinner and "dressed down" for exploring ports of call.