Let me help top to clarify this event a little. I posted the list of events a while back in a topic I posted but another one got all the attention so mine was overlooked.
The Concours is over 4 days. The first couple days are various individual events, workshops, a tracking event, etc. that are paid for individually.
As far as the car shows go, there are two parts to the Concours. The first, Saturday, is the Amelia Island Concours d'Elegance Cars and Coffee event. This is part of the car show and your car must be registered to be in it. There are usually upwards of 200+ - 300 cars at this event. It goes from 9 Am to 1 PM. This is not a drive in with your car event. Your car must be registered to be in it. It is FREE to register and FREE for the public to attend. So come enjoy.
The second part of the cart show is the Concours show with cars ranging from pre-war to new prototypes. If your car is to be in this event it must be registered also. This event (the main event) is the day after on Sunday and goes all day until about 5 PM.
Event Schedule:
https://www.ameliaconcours.org/event-information.aspx