How to recruit the Cook, Dancer, Bartender to your mansion ?

Question: How to recruit the Cook, Dancer, Bartender to your mansion ?

Answer:  To recruit the Cook, Dancer, Bartender to your mansion, you have to finish the 3 daytime challenges at Festival Island.
The challenges are those house games like finding the treasure chest, passing the guards, and racing to the wall - and you have to complete each one 3 times.