This will be my first visit to Oshkosh and I am very excited and confused at the same time. Excited because I would be flying my Cherokee to the largest gathering of plane nuts in the world and camp right next to the plane. I am also very confused about reservation system. Can you help me answering these questions:

Do I need to reserve camping if I am flying in?
Is there a reservation phone line? How about a number to call to talk to someone who can explain the whole thing?
Do I need to buy the show passes before flying in or are they available onsite?
The show starts on Monday but can I fly in Sunday night?
If I need to leave Wednesday afternoon do I need to make request or can I just fly out after all airshow flying has finished?

Thank you everyone in advance for your help!