On formal night I have seen people wear anything from full length/prom dresses all the way to pants suits and sun dresses. I think most people who get dressed up in the tuxes and full length dresses go the extra length to have formal pictures taken before/after dinner because the photographers are all over the place. You pay extra for those. I tend to wear a dress(not full length) and be comfortable. I dont' take the pictures so sometimes I go back to my cabin and change into more comfortable clothes for the evening. Its really all up to you and what your comfortable wearing.
Life is too short to let the ship of your dreams sail without you.
Carnival Destiny Feb. 2006
Carnival Fascination Feb. 2007
Royal Caribbean Grandeur of the Seas Feb. 2008 The DTW & MsBJ tour
Carnival Valor MsBJ and Dina Feb. 2009
Carnival Glory MsBJ and Dina Feb. 2010
Carnival Dream MsBJ and Dina Feb. 2011