For my cruise, I am happy that all nights with exception of the formal nights, the suggested attire is “casual”. For the formal nights it says “black tie (optional”. This is a trend in almost all cruiselines we are using now. Since we always have to fly to the port, it makes it easier for us not to take too many clothes. It is somehow modern this way. We like this trend.
There might be others who would like to dress up more on the so called “casual” nights. I think that would not be a problem either. 😉