What happens if my product is available for in-store pickup too early?

For anyone having similar issue in the future: my product became available on the 8th of September and they initially gave me time to pick it up until the 14th. I called Apple's hotline and a very kind lady extended my pickup window until the 18th. However, I really wanted to make sure it will wait for me until the end of the day, so later on I called the store directly and a very nice gentleman extended it once again, with absolutely no problem, until the 19th, so that my MacBook will definitely wait for me until the end of 18th of September. What a great customer experience! Don't ever hesitate to call Apple if you're facing any trouble. 🙂

Thank you so much for your answer. I had this clue on mind that they ship from overseas, as well, so I'm glad you kind of confirmed that. In this case I'm unable to provide a home address since I'll be on holiday in different country and there is my Apple Store for this pickup. I will call the store directly if the product is ready way too early. Once again, thank you and I wish you a wonderful day!