From your description of your Routine I would expect your ChristmasLightGroup to be turned on at 6:30 if at that time the ChristmasLights state is already on, and also the BatteryPowered state is already off.
You might like to bear in mind that each of your preconditions is evaluated whenever the relevant switch changes state. It isn’t clear whether the precondition is initialised to true by default, initialised to false by default, or if the correct state of the switch is looked up. So you might want to make a point of toggling each of your virtual switches to the correct state after saving the Routine, even if they were already correct. That way you know the Routine is in sync with reality.