For guys - Docker type slacks/Polo,Hawaiian,collared shirts.
I guess I'll have to look for a hawaiian shirt. I've just worn dockers and a button down shirt (no tie or jacket) on the smart casual and casual nights.
2007 - Majesty of the Seas (Bahamas)
2009 - Enchantment of the Seas (Western Caribbean)
2010 - Freedom of the Seas (Western Caribbean)
2013 - Golden Princess (Alaska, roundtrip from Seattle)