根據香港法律，不得在業務過程中，向未成年人售賣或供應令人醺醉的酒類。貴客在購買酒類產品時，必須确定已年滿法定年齡。

Under the law of Hong Kong, intoxicating liquor must not be sold or supplied to a minor in the course of business. Customers must be at the legal age for any alcohol purchase.