There's always one lane of bocce ball and one lane of shuffleboard designated for walk-ins only - these courts are free and first come first serve.
If there are others waiting to play, each group plays for 20 minutes and then gives up the court to the next group in line. When your 20 minutes is up, you're free to sign up a second time. If there's no one waiting to play, you can play all night long.
On top of all that, all 4 courts are free from midnight until 2am, so come early and stay late.
If you like to plan ahead, courts are also available for rent by the hour at $40/hr per court (tax in) - click below to make a lane reservation.