Statement:
An average person in Tuvalu drinks less alcohol than in South Africa

In the Alcohol average daily consumption rating Tuvalu holds position #115 2016 out of 189 and South Africa is #6 out of 189 2016.
Position of Tuvalu is better than position of South Africa.
South Africa is leader of the "Alcohol average daily consumption" rating. So people in South Africa are more likely to experience problems related to the consumption of alcohol in social, healthcare, and economical areas, compared to Tuvalu

Referencies:

  1. Alcohol average daily consumption 2016 by WHO
    The countries in the rating sorted by 'Both sexes' in descending order.
    South Africa 'Both sexes' value is 64.6
    Tuvalu 'Both sexes' value is 25.9