What must be readily available for inspection at a sale on an off-premise permit?

The off-premise permit must be readily available for inspection during a sale because it is the official document that authorizes the sale to take place in a location other than the licensed premises. This permit ensures that the seller is legally permitted to conduct sales outside of their standard business location, which is crucial for compliance with state regulations. Having it readily accessible demonstrates adherence to the law and allows regulatory authorities or enforcement personnel to verify that the sale is conducted under the proper legal parameters. Other documents, while potentially important for different purposes, do not serve the same primary function of establishing the legality of the off-premise sale.