My son is working in Arizona for nine months and he is 20years old . He turns 21 early august . He is staying with host families . Obviously being a British Uni student he has been used to being able to drink alcohol . He is aware he is unable to drink in bars etc but the law is unclear if he is allowed any within the home . He is not looking to get steaming drunk but say a beer after work or at a BBQ . Does anyone know who perhaps lives in the state ?