I agree with the previous answer. I’ll also add make sure you engage in conversation with more than a one word answer, relate the question to something personal and ASK QUESTIONS!! Read about Starbucks mission statement and core values and their history and come up with, ahead of time, at least two questions. It’ll show your genuine interest in the company. GOOD LUCK!!!

Be yourself , be genuine, and dressing casual , but nice attire is best. Its not a hard interview , smile, but dont be fake about it, and at the end gell the manager thank you for their time and shake their hand.