Guests Arriving Ahead of Pippa Middleton Wedding

What does the phrase 'Sorry I didn't know you were there.' imply about the speaker's awareness?

How might 'Self pity' relate to the character of Nightcrawler?

Discuss the significance of the term 'Nightcrawler' in the context provided.

What might the speaker be feeling when they express 'Self pity'?

What emotions could be inferred from the statement 'I can't.'?