Hello Shadow961! I can feel the excitement in your words about the new iPhone 5. All of your questions are great ones, but the best way to pre-order your device is online. Please go to www.vzw.com and pre-order your phone from the comfort of your own home! Have a great day!
If you are purchasing on Friday it would no longer be considered a pre-order as the device launches on Friday. If they do not have it in stock that day then you would be able to order one and have it shipped to you. If you're wanting to go ahead and pre-order now versus trying your luck in a retail store then you should go ahead and order online now. It will show you the estimated delivery time for orders placed at this time (I know at last check via Apple the delivery time is 2-3 weeks. This may be different if you pre-order via VZW).