For a first violation taken against the retail licensee by a licensing authority for serving alcoholic beverages, the licensing authority shall accept as a mitigating factor the retail licensee provided to the licensee's employees alcohol server training that addressed intoxication, drunk driving, and underage drinking, as approved by the licensing authority. Under this section, a mitigating factor must result in a lesser punishment than the retail licensee would have received if not for the mitigating factor.