Unfortunately, you are more likely than not going to be experiencing a power outage.
You'll have more power if you're the head lighting designer on a project, but even then you have to answer to the director or event manager. Your part in this production is a key piece, but it is only a piece. You may feel powerful announcing, "Let there be light!" and having it be so, but that's about the extent of your power. Depending on the type of project, they can work you pretty hard. Maybe on the seventh day, they'll let you rest.