Can someone give me an analysis of the party that Lady Macbeth throws for Duncan???
Is Lady Macduff being cheated on?
Who are the two men that dance with each other?

I've only been to SNM once, and since I went with a completely blank slate, I wasn't able to catch enough action to piece together the story.
But I keep thinking about it, and this ballroom scene was one of the only "bigger scenes" that I caught, so I would like to know more about it...