Well I got no code with my preorder and I assumed it was because a) I used the EU store and b) Will not be charged until 10 days prior to release according to the ToC when placed the order.

The EU store does not have any code listings within the account page because it does not have an account page per se, it has a profile page only, within that profile page it says I have registered "FINAL FANTASY XIV: HEAVENSWARD - Collector's Edition / Registered On: 17/03/2015" but there are no links for codes about that product. I just figured the NA store is doing it differently than the EU one hence why no code option in the store or the email sent. The email itself states "When the product is released, you will be sent another email containing information on how your product will be supplied. Please keep both of these emails safe as they contain important information on your purchase. You will usually be charged for the product ten days before the expected release date although this can vary".