The first thing Garrett should do is to "identify issues that need to be addressed."
Explanation:
The selling, distribution and promotion of alcoholic beverages includes consumer protection information, health hazards, and environmental factors. And Garrett would just get that from the appropriate stakeholders such as regulatory bodies. Garrett must therefore first collect information and classify the interested parties.
Garret should also go through all the legal and mandatory channels which are needed to be crossed before entering into such a beer distributorship business program. For an instance like asking license number, GST number, affidavit regarding any future consequence which may result into some loss, etc.