Thousands turned out for the show, despite a spike in crime over the weekend and a threat of storms.
No incidents were reported by Michigan State Police before or during the event.
Fans took in the show from along the waterfront, as well as on Belle Isle - where 3,400 attended.
Only four curfew violators were taken into custody. And instead of taking them to the precincts, they were transported to the Coleman A. Young Rec Center.
An effort was made to decriminalize the youth, which was a talking point leading up to Detroit River Days.
The end goal was to make sure more parents were involved and it seemed to have worked.
"It was 8:05," said one young man taken in by police.
But that meant five minutes too late when it came to the Detroit fireworks curfew. From 8 p.m. to 6 a.m. all minors had to be accompanied by an adult.
So far there has been a smaller number of of curfew violators. Last year, there were 179 violators picked up.
Detroit Police Chief James Craig wanted the curfew two hours earlier, but was pleased by the efforts of police, volunteers and members of the community.
"We talked about decriminalizing our youth, we don't see that as an issue," Craig said. "I understand some parents have two jobs and they can't be here to supervise. There are volunteers down here to assist.
"We want our police officers to focus on one thing - safety."
--FOX 2's Dave Spencer and Randy Wimbley also contributed to the report.