The Intent of the Candlelight Vigil?

I sent this email to one of the listed contacts about the scheduled vigil on March 6 at the Cathedral...

The purpose of the Candlelight Vigil is stated as showing support for the parishioners.

Will this vigil include prayers and such?
Will those attending be praying for guidance?
Will this be to oppose the Archbishop and his decisions and draw attention to his decisions?

Thanks for any help you can provide in understanding the intent of the vigil...

I forgot to ask why a "candlelight" vigil would be held at 11:00am...