I would like to see a community rep clarify as well. Rift had a very smooth way of doing this that allowed friends you brought into the instance to "Attend" the ceremony, and there were fun party favors and a feast. The two things that worry me about this is

1. applying via the website - there is no need to have any part of this happen outside the game
2. working furiously on "cutscenes" - there is no need for this to be "cutscene" driven. Guests at the wedding should be able to attend the ceremony as well.