Q: Apple Watch Series 2 preorder delivery date error?

So I preordered the Apple Watch Series 2 on Sept 9 (at 12:15am PST). Was there ever an option to pick this up at the store? I didn't see that option available, so I chose to have it shipped. The order screen said it would deliver within 6-8 business days (meaning it should arrive Sept 19-21. However my account says it will deliver by Sept 26-28...? I'm a bit confused, as I've done this several years in a row now. Is this a glitch? Or did the Series 2 watches sell out instantly? And was the pick up option ever available on the preorder day?

I have an appointment to pick up my iPhone 7 Plus on launch day (iPhone upgrade program) and I was wondering if I could just pick up an Apple Watch while I was there? Just curious. Thanks for any info!