What is The Arches? Where did the name come from?

In what way is The Arches considered to be form of discrimination? How does Harry feel about it?

What are the positions of the various family members regarding the ball at The Arches?

What are the principles involved with the various family members over the coming-out ball at The Arches?

Why is it important to Frieda to attend the ball at The Arches?

What were the last minute problems faced before the ball? How were they solved?

Why was Olympia more pleased with the way she handled the whole situation with the ball over the way Harry handled the situation?