Dressing smart beach casual of resort casual means complying with certain clothing standards during your stay at a resort or on a cruise ship. This style prohibits wearing a bathing suit to a restaurant. While flip-flops, sportswear shorts, running shoes or T-shirts are perfectly fine for daytime meals at resort restaurants, you should refrain from wearing those to dinner. Men are advised to go for a short sleeve/ polo shirt (or a slogan-free T-shirt) and some fashion shorts (like Bermudas) rather than jeans. Women should wear a dress/pants/skirt.