Dress Code Europeans tend to dress up a bit more during the day, but jeans or shorts are still fine. Evening dress, announced in the daily program, comes in three categories: casual, informal and formal. Men will need a dark suit and tie or tuxedo for the formal nights. Women should have a cocktail dress or evening gown. On informal nights, men are asked to wear trousers and a jacket (no tie) and women, pants outfits or an "informal" dress. On casual nights, men can get away with jeans or slacks and a sports shirt while women are generally held to the "informal" standard. When going ashore, passengers are asked to adhere to local customs. During the shore excursions in Tripoli, for instance, it was requested that passengers wear trousers and have their shoulders covered.