The voucher exchange process is easy, the staff are already familiar & understand the cooperation with the app. For new customers, just add 5 thousand for a new card. The crowd & waiting time does not really affect because there are quite a lot of arcade machines & rides, the location is also quite spacious. Plus, the plus point is that there are many chairs available for parents to wait for their children. If there is an error in the arcade machine ticket dispenser, don't worry, there are officers who go around the area who are responsive if we ask for help.