I looked up some navigators from the very merrytime cruises from this last year to try to figure that out myself, since we'll be on the very merrytime 4 night itinerary too in December this year. If they do it the same as last year, it looks like Pirate night is the third night, the day that we're at CC. It's our first cruise though, so I don't know how good of an indicator last year would be for this year.