Some days one cup of coffee will do, others you may need 5 cups!
If you didn't already know this, Starbucks has a refill system that has been going on for years.
Starbucks refills are free if you use the Starbucks app with a registered Starbucks card to pay for your first drink.
Then you present the cashier with your app you used for your drink when it comes time for your refill.
Of course if you order and type of Frappuccino, you can't get that refilled.
But that makes sense!
If you order brewed coffee, hot, iced, or cold brew and tea hot or iced, those come with the free refills!
So if you do plan on getting a free refill you won't be able to leave the store after ordering your first drink.
The refills must be within the same visit.
So make sure you are sipping fast!