Pack for a cruise and you’ll hit the same question sooner or later: what does formal night actually mean? The phrase hasn’t changed much over the years, but what it looks like at the dinner table has. On one ship it’s a tuxedo, and on another it’s a nicer shirt and a pair of clean slacks.
Each cruise line sets its own terms, its own names for the evening, and its own level of enforcement. Here’s how six well known lines handle it, based on their published guidance and recent cruising guides. Details can shift by ship and sailing, so treat this as a map, not a rulebook.
Carnival: Cruise Elegant, With Room to Move
Carnival calls its dressy evenings Cruise Elegant. There’s one Cruise Elegant night on cruises of five days or shorter, and two on cruises of six days or longer.[1] The suggested look is dress slacks and shirts with an optional sport coat for men, and cocktail dresses, pantsuits or elegant skirts and blouses for women.[2]
The firm rules are about what stays out of the dining room. Cutoff jeans, men’s sleeveless shirts, shorts, tees, sportswear, baseball hats, flip flops and swimwear aren’t permitted there.[2] In practice, guests wear everything from slacks and nice shirts to tuxes and ball gowns, though most land somewhere in the middle.[3]
Royal Caribbean: Dress Your Best
Royal Caribbean has moved away from the term formal night on shorter trips. It no longer uses the name on sailings under seven nights, where Dress Your Best is the standard.[4] The line’s own guidance describes a best black tie look, with suits and ties, tuxedos, cocktail dresses or evening gowns all acceptable.[5] A sailing can include one to four of these evenings, at the ship’s discretion.[5]
The code applies to the Main Dining Room only. There’s no dress code for walking around the ship, and other restaurants have their own.[4] One guide notes that closed toe shoes are mandatory[6], and that the evenings have been rebranded and are strictly optional.[7] A poll in a Royal Caribbean dining Facebook group with about a thousand respondents found just over half always dress up for formal night.[4] It’s informal evidence, but it shows plenty of guests still enjoy the occasion.
Norwegian: No Formal Night at All
Norwegian is the easiest line to pack for. It has no formal nights on any sailing.[8] The line built its identity on Freestyle Cruising, which means no assigned dining times and no formal nights.[9]
There are still some expectations. One recent guide says the line asks that attire feels put together and suited to the setting, with shirts and footwear required.[10] Some Norwegian sailings have optional dress up evenings, and guests don’t have to take part.[11] Specialty restaurants may offer their own dress suggestions, though enforcement varies by venue and ship.[8]
Princess: Smart Casual by Default, Formal by Length
Princess keeps a more traditional rhythm. Most evenings follow a Smart Casual code in the main dining rooms and specialty restaurants.[12] Formal evenings, often called Dress to Impress nights[12], call for an evening gown, cocktail dress or elegant pantsuit for women, and a tuxedo, dark suit or dinner jacket with slacks for men.[13]
The number of formal nights follows the length of the trip. Five to six night cruises typically have one, seven to thirteen night cruises have two, and fourteen to twenty night cruises have three.[14] Shorts aren’t allowed at dinner in the main dining rooms, even on Smart Casual nights, according to one Princess focused guide.[15] The buffet, casual restaurants and poolside dining stay open every evening with relaxed dress codes.[12]
Celebrity: Evening Chic Instead of Black Tie
Celebrity took a different route from the traditional model. It replaced formal nights with Evening Chic nights, where the dress code is dressier than smart casual but less formal than a traditional formal night.[4] The overall style is often described as chic casual[3], and one cruising outlet notes the crowd tends to be a bit more upscale than on Carnival, Royal Caribbean or Norwegian.[3]
Dinner expectations tend to be a notch higher here than on the mass market lines. One 2026 guide says Celebrity doesn’t unofficially allow dress shorts at dinner in the main dining room[16], unlike Norwegian, Carnival and Royal Caribbean. Another puts Cunard and Celebrity among the strictest lines.[9] Check your sailing’s daily schedule for the exact wording each night.
Cunard: Where Formal Still Means Formal
Cunard sits at the traditional end of the spectrum. Its dressy evenings are called Gala Evenings, and they’re the closest thing in this group to a classic black tie night. One 2026 guide says Cunard and luxury lines still enforce formal nights, while mainstream lines are relaxed.[16]
That makes Cunard the line where packing a tuxedo or evening gown makes the most sense. Another guide groups Cunard with Celebrity as the strictest lines, while Norwegian and Virgin Voyages have no formal nights.[9] If you’d rather skip the dressing up, you may be happier on one of the other lines above.
Packing Tips Before You Go
Start with how many formal evenings your sailing will have. On Carnival and Princess that follows the trip’s length, and on Royal Caribbean the ship decides. Norwegian needs none.
For the lines that do ask for something dressier, one outfit per designated night is enough. Dark trousers with a collared shirt and a jacket will do for most mass market ships, while Cunard calls for more. Confirm the details on your cruise line’s own dress code page before you pack.
