So, it only lasts 1 day and 18 hours. Rewards are granted at the end of the event. It requires the use of scout markers. Each battle is worth 20 pirate points and the first reward comes at 200 points. After every successful battle, the difficulty increases. It seems that finally, the scout marker perk is somewhat useful again. And saving berries is well worth it again but only if you are participating in the event. 1st reward: 200 points 2nd reward: 500 points 3rd reward: 800 points 4th reward: 1200 points EDIT: General consensus seems to be this event is not worth spending valuable resources to complete 100%. A better use of scout markers is to scout generic markers rather than event ones. The main reason is you get more resources and gold from regular markers than event markers and the rewards aren't worth it.