Secret Levels

To unlock a secret level on the Level Selection screen, get an Expert Score on all levels in a Restaurant (ex Get Expert Score in all 10 levels of the Cruise Ship). After you unlock the first level, there will be a button on the Level Selection screen that you can click. There are 5 levels to unlock, one for each Restaurant.
Unlockable ........... How to Unlock
Business Lunch ....... Get all Expert Score in the Submarine
Date Night ........... Get all Expert Score in the Cruise Ship
Everybody to the Limit Get all Expert Score in the Rocket
Girls' Night Out ..... Get all Expert Score in the Rail Train
Summer Camp .......... Get all Expert Score in the Blimp