We were on the Silver Whisper and I had a dark suit while my wife had an
evening dress. Most did have evening dresses and tuxes, but I did not feel out of place at all. You have nothing to prove to those people and you will never see most of them again anyway. It is open seating and the people were very friendly. To those who want to flaunt it remember there is always somebody that can out flaunt you and besides the people who really have it do not have to flaunt it. Have you ever seen Bill Gates or Warren Buffet?