Dinner attire at all-inclusive resorts in 2026 generally falls into three categories: Resort Casual, Resort Elegant, and Formal. For most buffet-style restaurants, "Resort Casual" is the standard, meaning sundresses or nice sandals for women and polo shirts with tailored shorts or chinos for men; swimwear and tank tops are strictly forbidden. For à la carte or "Specialty" restaurants, the dress code often upgrades to "Resort Elegant." For men, this typically requires long trousers (linen or light cotton), closed-toe shoes (no flip-flops), and a collared shirt. Women usually wear cocktail dresses, jumpsuits, or elegant maxi dresses. In 2026, the most prestigious 5-star resorts may have one or two "Formal" nights where a blazer or suit jacket is encouraged. Always check your resort's digital app before packing, as many Caribbean and European resorts have modernized their codes to allow "smart" fashion sneakers but still maintain a "no wet clothing" policy in all indoor dining areas to preserve the upscale atmosphere.