As someone previously mentioned I guess it's how elaborate your costume is. My first pirate night costume consisted of just a pirate themed shirt. On my previous cruises my costumes have gotten so elaborate that I have two suitcases just for pirate night. I wear a fun extra large pirate hat during the day and a full pirate costume in the evening. Sometimes while I'm packing to go on a
Disney Cruise I tell myself is it worth carrying all this extra luggage for one day of pirate themed fun but after all the great comments from my fellow guest and cast members I tell myself it is worth it.