CCTV played in court showed a fight between two men escalating into a punch-up in the smokers' area of the club.
The fight turned into a violent mass brawl in the main bar. At one point a man was knocked to the ground and kicked and punched before being left unconscious.
The shocking footage shows female workers at the club attempting to help the unconscious man as the violence continues.
The fight went for about 10 minutes and caused the club to be shut for the rest of the night.
Millions of people in Queensland and New South Wales have been warned to brace for days without power after Tropical Cyclone Alfred makes landfall later this week.