Tobus--there are some of us US citizens that understand and appreciate formal dress codes. Some of us even own our own tuxedos and tails and aren't afraid to use them...

As for this thread...I for one think the question was a good one and appreciate the comments for what they are--a guide on what is appropriate to wear to a UN ball in a palace in Austria. I have to say, I won't be going to a UN ball in my foreseeable future. If that changes, I'm armed with the knowledge of this forum and can dress appropriately.

To the OP--have a great time at the ball and opera!