When your booking window for activities opens look for appointments for Pirates League at Bibbidi Bobbidi Boo. That will be your pirate night. On our 4 night in July it is day 3 (Nassau)
Also it can change. We had planned around it being on night 3 on our 4 night on the dream in 2014 (and booked Palo like the guidebook said to do), but due to weather, they moved it to night 2.
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