I recommend you guys all call Apple. I am in the same boat and called last night. The first rep I spoke to told me my device hadnt shipped and it likely wouldnt be there by the 16th.
So I called back and did the automated lookup thing which told me it was already in transit. Asked to speak to a second rep and explained the situation. She gave me a fed ex tracking number in about 10 seconds. She said ship to store generally does not provide the user with tracking.
Mine just cleared customs last night and has been sitting in Oakland, CA. Hoping it makes it here tomorrow. I was going to take a 1/2 day at work but it says delivery by 4:30 in the afternoon. I generally get off at 4:00.
I will never choose ship to store again. I selected that because my hope was if they received some early they would fill my order. I almost feel like we're being penalized for ordering early and choosing to ship to a store. Meanwhile, best buy locations around me have stock.