Thanks for all the great comments, everyone. As to the belt, yeah, I know that technically it's a no-no, but it just seems wrong to me to not wear a belt, even with the waistcoat. I just likes me some belt.
Oh, and don't worry too much about the bride, she looked quite splendid. She also knew full well I was planning on showing up kilted, and was totally fine with that. There was a time when it looked like I might have to step in for one of the groomsmen who was still in Iraq, and if that would have happened, she would have wanted me tuxed, to match everyone else. Fortunately, he made it back in time, and I was allowed to be free and comfy.
Bookmarks