The two couples sold the business to an Australian company in 2016 for $17 million.
Lay had her case transferred to the Wellington District Court where, on May 9, she was sentenced to nine months' supervision with special conditions, fined $800, and banned from driving for three months.
She can apply for an alcohol interlock device to be installed in her vehicle when her ban expires.
Her LinkedIn profile describes her as the founder and quality assurance consultant for the New Zealand Skydiving School. She is also a former chief executive and shareholder of the company, which is based near Methven, in Canterbury.
Interlock devices, which prevent a car starting if there is alcohol on the driver's breath, are mandatory for repeat offenders or offenders with high alcohol levels, and must remain fitted on their vehicle for at least 12 months.