Meteor Shower Rain Lights (Blue)

Is there a trick to turning them on? They are solar, I hit the on/off button on the back several times, it isn't lighting up and it is dark out.

I want to use at church but we have no trees! What other options are there for displaying?

how long is the string of lights from the solar panel to the very last light? 300' driveway, how many strings needed?

Can you turn off the cascading feature and have solid lights?