Another tip from me!

Its not particularly a tip, and it doesn't help you in any way, (well the tips do) but its fun to do!

Anyway, go to the Marrymore Hotel and pay to stay in the suite. Go about everything normally, and stay a night. After Mario is done sleeping, go over to the light switch and attempt to turn it off again. It will say something like "You have only paid for one night's stay...would you like to stay again?" Say yes, and stay a few times. Keep in mind, that everytime you stay, you are going to get charged 100 coins later. When you are done, go downstairs, and your path will be blocked by the employees of the Hotel. They will then take the 100 coins for every extra night you stayed and if you run out of coins, they will make you work off the extra debt! You will become a bellhop, escorting guests to their rooms and recieving some tips along the way. After awhile, they'll let you leave, but this is fun to do for a bit.