Which of the following is not a technique used for cutting off service of alcohol?

The choice of bargaining with the customer is not a technique typically used for cutting off service of alcohol. In situations where alcohol service needs to be halted, it is essential to maintain clear boundaries and enforce responsible service practices. Bargaining might imply a level of negotiation that could undermine the authority or the need to ensure patron safety and compliance with legal regulations regarding alcohol service.

Moreover, using stock phrases, being non-confrontational, and employing the word "can't" are all effective techniques in this context. Stock phrases provide a consistent and professional way to communicate the decision to cut off service, ensuring that the message is clear and understood. Being non-confrontational helps to de-escalate potential tensions and maintain a calm atmosphere, while using phrases like "I can't serve you any more" directly communicates the decision without ambiguity. These strategies help in managing the situation amicably while prioritizing safety and legal compliance.