Promise of Devotion (Platinum) - Would like clarification

[Vespar]

The mog station states that the Promise of Devotion comes with "Special Ceremony Attire: Receive two sets of garments with different dyeable patterns."

1. Does this mean we get one dress outfit and one tuxedo outfit? or can we have say two tux's instead of the dresses.

2. Do both parties have to buy the "Promise of Devotion" or just one?

3. If you buy the Platinum version do you get all the items from the gold and free packages too, or would you have to buy those separately (is that even possible?)