For days spent exploring the ship and relaxing, presentable, casual clothing is best, according to Carnival. The official company website recommends dresses, trousers and skirts for women, and polo shirts, tees and shorts for men. Carnival asks passengers to refrain from wearing basketball shorts, cut-offs, tracksuit pants and flip-flops around the boat. Some cruise destinations, such as Bermuda, have conservative standards of dress, so consider wearing modest clothes when leaving the ship.