Just called DCL and was told:
30th - Formal night
9th - Formal night
11th - Pirate night
12th - Semi formal - Captains Night
I also asked about any Hawaiian nights or Hawaiian deck parties and was told the only "Hawaiian" that shows up at this time are the menu's for our port days in Hawaii that will be related to the specific port that we're in.
Thanks Charmaine...knowing we have 2 formal nights is definitely needed info!