I am a Hindu and have been studying the religion for the past 2 years, once reading this, you will understand why Hindus may or may not drink alcohol and use their religion as good reasoning for their actions.
Hinduism is literally a term to refer to the people of Indus - 'Indoos', which was soon turned into 'Hindu'. Before the new term was given to the people in the land of Indus, the faith itself was called 'Sanathan Dharma', which cannot be translated to express the full meaning of the name, however, with loose translation, the name translates to 'eternal truth' or 'eternal way of life'.
'Sanathan Dharma' is literally a culture of vast literature and customs, alongside rituals and meditation that has formed into a religion due to western labelling. So what is the 'truth' of Hinduism? Although Hindus can be a polytheist, monotheist, alongside an atheist (due to belief by some that there is no need for God to be a Hindu, as Hinduism promotes soul enhancement rather than believe in a 5omni God), all Hindus must believe in the basic principles of: 'Dharma' = Duty, 'Atman' = Soul, Karma = Good and Bad actions result in consequence, Samsara = Cycle of reincarnation, Maya = Illusion, Moksha = Soul Peace. Everything else is secondary, usually dependent on what branch of Hinduism you choose to go down: Smartism, Vaishnavism, Shaivism or Shaktism.
Because morality is shaped through the belief of Karma and Samsara, rather than like in Abrahamic faiths where you are made to follow the rules written by the prophets to reach salvation, Hinduism allows people to be totally in control of their life and actions whilst having faith in whatever they want. I for example am a monotheist Hindu who drinks and smokes. Since lots of people don't think that drinking is a directly bad thing with many people arguing that it produces the best Karma of all - happiness, they drink, however, many people argue differently and take the more 'drinking is awful karma' route. Hindu scriptuers neither agree of disagree with intoxication, in fact, there is a lot of literature in the name of one of our demi-trimurtis, Lord Shiva, who's followers genuinely smoke weed to meditate under him, something that many Vaishnavs are against.
Hope this helps!!