I found these two stories conflicting myself.
1.
WLWT
A power outage Sunday evening briefly shut down portions of Kings Island.
Park spokesman Don Helbig said the outage lasted for less than an hour and did not affect the entire park.
Helbig said no passengers were stuck on any rides, which can continue operations on backup generators, during the outage.
After power was restored, the rides were checked by park employees before reopening to the public.
2.
jbaker@enquirer.com
Most of the rides, shops and restaurants that closed about 6:30 p.m. were reopened by 9:30 p.m., said Don Helbig. Some park visitors had to be escorted off stopped rides, he said.
As I left at 11:30pm they either did not have power or chose to shut down all the International street resturants, gift shops, the Festhaus, the computers at the main gate, the metal detectors, the parking lot lights and fountains.