Yes, pirate night is on the 3rd night and you'll repeat that same restaurant for the 4th night. There are a couple of things that you might want to consider though before booking Palo's on that final night. In my experience, it's the busiest night. Not a big deal with getting reservations as you have REAS, but the restaurant will be very crowded. Also, the brunch is served on the 4th day. Were you planning on booking that too? If so, that's a lot of food and a lot of time spent in restaurants on your only sea day. Another consideration is the Disney shows. The full scale productions are put on the 1st, 3rd and 4th night. The 2nd night was a variety type show, with a comedian/magician. If you like the shows, you might want to consider dining in Palo's on the 2nd night and if you didn't want to miss out on one of your rotational restaurants, you could always double dip. In my opinion though, Palo's was so wonderful that I wouldn't mind giving up any of my nights to eat there. We had the pleasure of spending all 4 nights here for our early January cruise. I was in food heaven.
Tammi