Evidently from all the posts over the past year. Petty much short of swimwear and shorts work in the evening. If one wishes to dress in formal wear every evening as in the glorious past then that will be found and according to the other posters no one will make snide comments about being overdressed or being a snob. Also if one wishes to do the jacket and tie that is fine and the jacket or not and a Collared shirt that is fine. The T-shirt with no collar is still frowned upon but will be found by those that feel it is their right by having paid for the voyage. So at this time while it may remind many of the bar scene in star wars all is OK with very minor tweaks on the down ide of things. Go and enjoy.