The "Visit Home" feature allows you to send all of your characters, excluding Merlin, to visit home inside the castle. The "Visit Home" icon appears in the top left corner of the "Character Book" once the feature has been unlocked. Characters sent to visit home can be returned back to the park at any time by clicking the character's "Return" icon.  and will be earned every hour per character, however you can only collect the accumulated rewards every 12 hours. The rewards will appear on the red carpet bridge in front of the castle.
Defeat Zurg - This feature is unlocked in the game once Zurg is defeated.
Collection of rewards only after 12 hours.