TTFN2013

I have gorgeous full length formal dresses that hang in the closet and are rarely worn. I'd like to dress up for gala night, however formal wear is a pain to pack. I could pack lighter if all that is needed is smart dinner attire. This is our first time cruising with Holland America. We're leaving out of Barcelona and doing northern Europe. Can anyone answer, "How dressy is dressy?", on the Holland America New Statendam?