Tap the Pier to open the regatta window. The interseasonal regatta window has the following tabs: 1. Tasks. Here, players can pick a chest to complete the three tasks it contains either by themselves or with the help of other co-op members. You can dump the task you've picked by tapping the trash icon. By doing so, you'll lose the task progress and won't be able to pick it again right away. This waiting period does not apply to other co-op members. 2. Co-op Goals. This tab shows your co-op progress in completing co-op goals. You help your co-op move forward by completing tasks. All co-op members get rewards for each of the five goals your co-op achieves. 3. Season. This tab shows the leaders of the previous seasonal regatta as well as a sneak peek of the upcoming season. You can tap the icon in the upper-left corner to see your co-op's statistics.
You can collect the rewards your co-op gets for reaching co-op goals in the Co-op Goals tab. A message in the co-op chat will notify you when this is possible.
The chest rewards you earn during an interseasonal regatta can be collected once it's over. Simply go to the Tasks tab and tap the chest icon in the bottom-right corner.
It's important you collect your rewards before the end of the next regatta—otherwise, you'll lose them.