You will sometimes hear about NLE or Non Linear Editing as if it is superior. NLE is a method of editing and has no effect on the final results. It is usually faster and easier to make changes. We do not use any lights for video taping a wedding and reception. There should be nothing to distract you and your guests.
Modern cameras are now very sensitive and work well in low light situations.
This does present a challenge to the videographer. Most real world situations that are indoors contain light from outside and one or more artificial sources, such as interior lighting. Indoor lighting varies in color, depending on its source. These color differences are generally not noticeable by the human eye. Your brain does a marvelous job of making white appear white even though it is bathed in a yellowish light.