How do you pre-order on amazon?

[UnrealTai]

You do, after you pre order you have to contact support for the code.
Otherwise it can take a week to email to you (and it wont show up in the mygames section) but amazon support can see it right away. And they will tell it to you without fuss.

Also, its not a mogstation code they give, you redeem it on the shadow bringers early access website, then, that gives you a mogstation code after

So just fyi yes you get early access, the minion, and the aetheryte exp earring from amazon right away, you just need to chat or email them.
If they give you crap about it just contact a different rep, theyve been helping out easily for alot of us.