Never received email after ordering on Apple Store App.
Checked Apple order support and saw my order with order delivery date 9/25 standard delivery.
Six hours later, 10:06 AM, received email stating "Processing Order delivery date 9/25 standard delivery.
If you can see your order in Apple support system you should be golden.
My confirmations appeared about 14 hours after order placed.Ordered 2 separate Iphone6s's at 12:15 pacific, no confirmations, but both orders show and I can not order another. Seems time will cure anxiety.