from the rci web site:
Royal Caribbean International - Main Dining Room On Enchantment Of The Seas In the evening, there are three distinct types of dress onboard: casual, smart casual and formal. 3 to 4-night cruises include one formal night and two or three casual nights. 5 - night cruises include one formal and the remainder nights casual.
RCCL Navagitor of the Seas - Nov 26, 2005 (W.Caribbean) | Carnival Glory - April 15, 2006 (E.Caribbean) | Carnival Victory - Aug 21, 2006 (Canada) | Carnival Glory - July 28, 2007 (W.Caribbean) | Carnival Fascination - Aug 4, 2008 West Caribbean | HAL Eruodam - April 11, 2009 East Caribbean | Carnival Fredom - Aug 9, 2009 | Carnival Pride Feb 20,2011 (Bahamas) | NCL PrideOfAmerica April 16,2011 (Hawaii)