It will also give you early access of 1-7 Days. Notified via email.
Paying $25 for express 2 day shipping due to 'christmas' had marked on my order 'You will not recieve this prior to 25 dec.
May be different for you, but i promptly cancelled my pre order. I'll still get early access but come 11:59 Dec 20th It will end until I activate my game code and set a subscription plan.
There are numeous sites offering the sale of an electronically delivered code (ebay etc) that you can enter to play from Dec 20th onwards. I suggest you do that instead of waiting for amazon delivery.
You may download the client now.
You may not purchase it via origin.
I have not tested proxying to bypass origin lock.
The game isnt locked, purchase is.
Epic qq on official forums, 300 page threads, all trolled by me