In a groundbreaking initiative to combat single-use plastic pollution, several iconic San Francisco music venues took the leap towards sustainability by switching to reusable cups. Supported by San Francisco Environment Department and Clean Water Fund’s ReThink Disposable program, these venues teamed up with reusable cup providers r.World and TURN, leading the way in the entertainment industry. This effort, started in November 2022, is detailed in this case study covering results up to October 2023.