My local Family Mart, now Tops, won't sell me alcohol during off times but I see the Thais walking out of the shop 4am, 5am, 6am with bottles of beer.
Probably paying cash, not requiring a receipt as the till won't allow the employee to ring it up.
I don't mind the stupid hours, I end up going to a Thai shop and buy my grog, just disappointed that Tops sells to some but not others.