They don't make specialty drinks in bulk nor do they have espresso shots in bulk. Specialty drinks are made fresh. If you timed how long it took to make these items at home from start to finish and multiplied it by a reasonable figure accounting for all the customers ahead of you (some with multiple drink orders per vehicle), the amount of customers inside, and some room to account for payment processing. You might be surprised how fast of service you are actually getting. In store, they steam the milk to a certain temperature in addition (something not done at home). Everytime a go there, i see the crew hopping as fast as possible but there is a big misconception that making a specialty drink happens instantly and should move faster not knowing how the actual process is actually conducted. Fast food can make food in bulk in advance whereas specialty coffees have to be done fresh everytime. You can watch the process sometime to get a better answer to your question!
Idk honestly...maybe they were really swamped but when i went through the drive through ive always had great service...
Service speed at Starbucks is contingent on product quality, i.e. there are protocols the baristas need to follow to ensure the best quality of the product you, the consumer receives. Starbucks is not a fast food restaurant in which they remake 5+ of each drink option to speed the sales. They make each drink to order and strive for quality in their products.
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