score:4
So this, apparently, is the law since 2013 or so in Noumea and nearby:
And if you're wondering "why!?", apparently the idea is to stop schoolchildren from picking up drinks after school ends (Wednesday is a half day). Asking for ID when buying alcohol, however, doesn't seem to be a thing...
Also, the rules above apply to Noumea, but local communes have wide latitude to change them and many parts of the country are more or less dry. (Alcohol abuse is widespread among in the Kanak community.)