Ministers arriving for the Conservative party conference

The transcript captures a brief interaction as Cameron arrives, followed by questions directed at the Prime Minister about his expectations for an upcoming conference and whether it will involve discussions about the EU.

What is Cameron arriving for?

What does the phrase 'Here it comes' refer to in the context?

What is the Prime Minister looking forward to?

What might the Prime Minister spend time arguing about?

What is the context of the conversation regarding the EU?