When you complete expedition tasks, you get suns  needed to finish tasks in the estate and reveal the story of Sophie and her parents. The tasks in the expedition are the only source of suns (although you can get a few suns for completing puzzles in the photo album ). The number of suns you get for a task depends on the island and on the difficulty of the task itself.

In addition, there are often a variety of time events in the expedition, taking part in which allows you to earn a lot of prizes!