Dear The-Glitchh,
While concurring with Umakanthan Sir, I would like to add further as under:
Section 85 of Bombay Prohibition Act 1949 says whoever in any street or thoroughfare or public place or in any place to which the public have or are permitted to have access, behaves in a disorderly manner under the influence of drink shall, on conviction, be punished.
Shop is a public place in my view on reading various cases.
Behaving disorderly manner under the influence of drink is phenomena to constitute the offence.
You seems to be from Kolkata and in Kolkata it is common to drink in public place as what I know and what I have seen too. However, until such time anybody does not behaves in a disorderly manner, no cognizance is taken by the police.
Jurisdiction of Bombay Prohibition Act 1949 is extended in Maharashtra. You may be having similar law within every State.