The Western Caribbean itinerary C is new and hasn't been sailed yet, I think. We just did the Western Caribbean on the Fantasy last week as well as at the end of May this year. The at-sea days and port days are the same but the ports are a little different. Let's see:
Night 1: I think was a regular menu. It's the only MDR we went to on our recent cruise. LOL!
Night 2: DCL always does formal night the first at-sea night. By that, THIS is your formal night. Trying to remember if there was a special menu for tonight.
Night 5: This was our Pirate Night. Tracey & I had dinner at Palo this night because it was the actual day of our anniversary. We didn't even bother with any pirate events. We just enjoyed our amazing meal.
Night 6: I'm pretty sure this was our semi-formal night. Cannot remember for the life of me if semi-formal was regular menu or not. I know I'm not much help. It'd definitely worth mentioning this was semi-formal, tho.
Night 7: Pretty sure I remember a farewell menu, too. Again, can't be sure. In May by this time I didn't even want to be in the dining room at all. LOL!
I know I'm not much help. Hopefully some of that could help with the Palo decisions. Remember, there are many available reservations held back for booking once you get onboard. As soon as you board go to where the dining changes are being made (it'll be noted in your Navigator) and get the full scoop. You can request a rotation change at this location as well as add more Palo reservations.