Talk:I Choo-Choo-Choose You/@comment-174.3.102.228-20180302001217/@comment-185.56.100.171-20180620160413

Nothing. You only spend donuts if you dont want to actually add friends and for some reason want to get rid of the event (so short answer: dont spend donuts on it). If you add the number of friends the event asks for, you do not have to pay anything to fulfill the task.