Here's what I did.
I went through the online apple store and picked the phone I wanted, entered all of my phone/account information, and got to the final "cart" screen where I select shipping method. At about 9:55 my time I started clicking the hyperlink next to "in-store pickup" to select my store which brought up a menu that listed the closest stores to my zip code. These were continuously stating that pickup was unavailable at all the locations, but if you keep hitting the submit or search button next to where your entered your zip code, it will refresh the store list. At about 10:03 my time one of the stores on my list changed to "In Stock", I selected that store, which took me back to the cart page, I double checked that in store pickup was selected, and finished my checkout.
Good luck!