Who is playing a maze event for the first time should check this. We can collect 600 coins every 8 hours (for collecting times check this )+ startbonus of 400 coins = 5800 coins.
There is also a quest and videos giving additional coins. Videos - up to 7320 coins, Quest - up to 600 coins.
Neo-Kumagai #1135 time limited July16-18
Robot # 96 On the second last step of this path you can find the ticket. More infomations about the ticket you can find here.