Drinking-up time is a term typically used in the hospitality industry to refer to the final period where customers finish their drinks before leaving the establishment. However, there are several other phrases that can be used as synonyms for the same term. These include last call, final drinks, closing time, and end of service. Each of these phrases essentially refers to the same time period, indicating that the bar or restaurant is about to close and customers should finish their drinks. While the specific term used may vary depending on regional or cultural norms, the concept remains the same and serves as an important signal for customers to wrap up their night.