Um...hate to say it, but you're best bet here is to pack for what you want to participate in, not for what
DCL's flavor of the day is. Otherwise, you may just go stark raving..well...mad trying to figure this conundrum out.
Those of us on the 10-day holiday cruise will tell you that from day to day, DCL could not keep their story straight as to how many formal and semi-formal nights we would have. We ended up with two formal and one semi-formal, but most people were not expecting that. Personally, we're packing for two formal and two semi-formal. I figure why not? If nothing else, I can wear one of the outfits to Palo.
As for the Pirate/tropical, I'm guessing they mean one of each. They did one of each on the 10-night. I can't imagine they would suddenly combine them for a longer cruise...but then again?
No worries, Mon! That's my motto this time around.