Honzi/Guides/Mario Party
When farming coins, you should maximize the net worth of all 4 players:

• Do not pay coins for any actions that don't result in net gain of coins, such as paying coins to steal coins from another player.
• Enable bonus stars.
• Go for extra coins in minigames whenever possible.
• Only purchase items if they are needed to get stars, such as skeleton keys.
• Stars should be purchased as much as possible.
• The group of 3 players in 1v3 minigames should win.