It was a busy evening for Niagara police with thousands of visitors in Niagara-on-the-Lake and the St David's area
Police stopped about 350 vehicles in RIDE checks yesterday.
One driver was fined for having open alcohol in their vehicle.
Later in the evening, a second driver was stopped for suspected alcohol impairment and failed the road side screening device.
That driver was arrested and faces both criminal and provincial driving sanctions including a 90 day driver's license suspension and 7 day vehicle impound.