Statement:
An average person in Costa Rica drinks less alcohol than in Vietnam

In the Alcohol average daily consumption rating Costa Rica holds position #105 2016 out of 189 and Vietnam is #27 out of 189 2016.
Position of Costa Rica is better than position of Vietnam.
Vietnam is leader of the "Alcohol average daily consumption" rating. So people in Vietnam are more likely to experience problems related to the consumption of alcohol in social, healthcare, and economical areas, compared to Costa Rica

Referencies:

  1. Alcohol average daily consumption 2016 by WHO
    The countries in the rating sorted by 'Both sexes' in descending order.
    Costa Rica 'Both sexes' value is 28.1
    Vietnam 'Both sexes' value is 49.3