As with any order at Starbucks, you should do your best to abide by certain rules when you order a cup of water, which is available free of charge.

If you want to order a cup of water at Starbucks, do so when placing the rest of your order so the barista can factor it into their drink-making routine.

Asking for water after the barista has made your other drinks requires them to go back to grab a cup, pour water, add ice, and take it back to you, costing more time.

Likewise, when you request a cup of water, you should always specify the size of the cup. The barista doesn't want you to complain about the default water option — a grande with ice.

If you would like a free cup of water with your mobile order, ask at the counter before picking up your order. Try to avoid asking for water at the pick-up point as you would in-store.