Sooooo I found a fix to the bug that is a double edged sword.
If you go into the garden through the elves quarters, leave the garden via the gates and head back into the ballroom the game will allow you to progress. Here's the kicker; you will be stuck in formal attire the rest of the game and will not be able to equip anything else. Ever.
It sucks and I wish bioware would have done something about this in the patch but so far this is the only resolution I've come across.
