The Code: Crystal has formal, informal and casual dress codes. After 6 p.m., casual daytime attire is not appropriate. Shorts and baseball caps are not permitted for men or women. Black Tie Optional evenings offer passengers the opportunity to dress formally: jackets are required for men (dark suits with ties or tuxedos are recommended), and formal cocktail dresses, evening gowns or dressy evening separates are recommended for women. Informal attire is known onboard as Crystal Casual and applies to most evenings. Requirements are collared or button-down shirts for men (sport coats optional) with dress pants or smart trousers, and blouses, sweaters, skirts, dresses or dressy slacks for women.
Number of Formal Nights: Crystal cruisers can expect one Black Tie Optional evening on seven- to 10-night sailings (based on itinerary) and two formal evenings on 11- to 13-night cruises. Check with Crystal for the numbers of formal nights on world cruises, holiday sailings or ocean crossings, as these can vary.
Nightly Casual Option: The Lido Cafe is only open for breakfast and lunch, and the casual Trident Grill closes each evening at 6 p.m. Unless passengers like to dine early, it is possible room service will be the only choice for a truly casual option (especially on formal night).
Written Restrictions and Jeans: With the exception of Tastes, jeans may not be worn in any venue or lounge, including the casino.