Celebrity represents what you may not want in a cruise. That's why there's a Celebrity and lines, more upscale or more downscale, with a different attitude about dress. Attitudes about adherence to the spirit of the occasion, in any form, dress or comportment, may be more rigid on Celebrity. And that's how some of us want it and want to share it with likeminded people. We don't appreciate people "crashing" the party with their own ideas about what's comfortable for them. What goes for line A or B doesn't have to be across the board to include line C and D. The cruiselines, for variety's sake, need not be monolithic across the board.