POLICE were busier than usual on Saturday night as a power outage saw patrons spill out onto the CBD's streets.
Inspector Virginia Nelson said 13 people were arrested and 20 charges were laid in the space of about seven hours.
"The power outage displaced a lot of people," she said.
"But that wasn't the only factor. Numerous others were given tickets."
Inspector Nelson said most of the charges related to assaults, some of which were on police officers.
She reminded people of the Queensland Police Service's 'Be Safe - It's your responsibility' campaign, which targets alcohol-fuelled violence in Rockhampton and Gladstone.
"One punch can kill," she said.
"Don't drink drive, watch your mates and enjoy alcohol responsibly."
She said their strategy included high visibility and rapid response.