Which of the following is NOT an acceptable method of payment in a bar?

Store credit is typically not an acceptable method of payment in a bar because it is generally associated with retail establishments and is not a common practice in the service industry. Bars and restaurants usually operate on direct monetary transactions at the time of service, using methods such as cash, credit cards, and travelers checks. These payment forms ensure immediate compensation for the service provided, allowing for streamlined operations and avoiding complications in tracking and redeeming credits that aren't indicative of standard customer transactions. In contrast, cash, travelers checks, and credit cards are widely accepted because they facilitate easy payment processing and immediate settlement of the bill, making them more appropriate for bars.