If you meet all the participation requirements when the regatta starts, you will see an icon on the right side of your screen. Tap on it to enter the regatta. Members of the Neighborhood complete regatta tasks, earning 1 point for each task regardless of its difficulty. Points are added to the overall total for the Neighborhood. Tasks are issued from the regatta interface. Simply select the task you're interested in on the task board and complete it within the specified time. Any items received and goals completed before taking the task don't count.
In this regatta, you need to pass 120 buoys to get the final reward (the gift box at the top of the screen on the buoy counter). Unlike the seasonal regatta, you get a personal reward for each buoy as soon as you reach it.
In addition to the 120 buoys with standard rewards, you can unlock a bonus line of rewards for 500 Gems. To do this, press the Bonus button to the left of the buoy reward meter and agree to the terms of activation of the bonus for 500 Gems.