Olivia, Bermuda was CCC last year; that may be causing the confusion.

If you cheat and use regular black dress shoes instead of patent leather, formal wear adds maybe two or three pounds for men. It substitutes for one pair of dress pants, one dress shirt, and one sports coat so you are just adding the cumberbund, tie, and hardware.

If you would take one less hard back book and go to library onboard instead, it is probably a wash. I am not too sympathetic to those that blame the airlines for their wish not to have formal nights.