Greetings!
Yes, the in-game items are account-wide items!
As mentioned along with the in-game item code redemption instructions, the ability to trade the "dream of the Fayth" token items for the outfit of your choice will be possible after the conclusion of the Fan Festival in Europe (Feb. 2017). Here is a link to the instructions on redeeming the in-game items! (Japanese, German, and French, too!)