If you purchased another beverage at the coffee chain, like a macchiato, iced coffee, or even a meal item, water is usually free.
Ali’s post raked in over 88,000 likes and some 2,800 comments, and folks who watched the video had differing opinions as to who was in the right.
Source: https://www.distractify.com/p/starbucks-customer-pays-for-cups