The activity lasts 3 days.
Requirements: level 15+
To access the activity, click on the icon in the right-hand menu
What to do
You need to complete tasks and accumulate special coins for them. The more coins you accumulate during the activity, the more rewards you get.
Quests Tab
In this tab, you see your tasks and the number of special coins you will receive for completing them.
You can either complete a task or skip it for superbucks. You cannot reject tasks.
When you complete a task, waiting time for a new task starts. You can skip the waiting time for superbucks.
Tasks have no timer. You can take as much time as you need to complete them.
Rewards
You get rewards for accumulating special coins. You can see the rewards here:
The rewards are: 
Ratings Tab
You must collect 10 special coins to enter a rating.
1st place reward:
15 superbucks
40 baubles
2nd place reward:
10 superbucks
35 baubles
3rd place reward:
5 superbucks
30 baubles
Places 11-15 reward: 15 baubles
Places 16-20 reward: 10 baubles
Places 21-25 reward: 5 baubles