Afaik, the current alcohol law is already partially banning the sells or limit the sells of alcohol beverages on public store except for certain store that have special permit to sell it.(?)
The current law on my view is already good, in a way complete ban will result of giving rise to bootleg alcohol sold on the street and crime syndicate similar to what @Madokafc said. In contrast, an outright alcohol sell will result fatal accidents increase due to DUI, I personally do not trust indonesia police or vehicle drivers in avoiding or controlling the DUI incidents, even US DUI accident case still problematic. Not to mention 80% of indonesian drivers bribe their own way for their driving license.
The only thing I agree in turning the law's status quo is increasing the cukai price every year for certain percents and milk those smokers and drunkard's wallet dry. Both smokes and alcohol kill the non user, but they kill differently, might as well extort the users dry.
Yup better to increase the tax or other direct bea for alcohol beverage and smoke to control the distribution of such goods and made them expensive enough so the average minor can't touch them.