Onn the 5 night cruise there was one formal night and one semi-formal night. If I were guy I'd wear a sports coat every night. Victory is COLD!! I ate the the alternative dining room on semi formal night since my semi formal didn't cover me a whole lot better than my formal did. Except for a bad iceberg lettuce salad, the buffet was delicious and it was much warmer since I could wear my usual fall clothes.