Tip: If you are in the second spot from the left and are controlling the treasure box, put in down the fourth pipe. Because 9 times out of 10 you will get it.
Tip: If you are in the Bowser suit, jump to avoid getting hit, and you can bounce off other players and stay in the air.
Piranha's Pursuit
Tip: When racing the piranha, several trees will fall out of nowhere, so be aware.