If you're looking for a club plot for a dozen or so cars at this year's JAE then finding space in the area called MAKUHARI is going to be difficult as it's sold out.
Yes, MAKUHARI is sold out and all the plots full. JAE operates a first-come-first-served policy with bookings so, if you haven't booked yet, you'd better do it quickly! Plenty of other areas are selling out too so MAKUHARI won't be the last to be sold out.
If you're in doubt of what to book:
25 cars - KANETSU
12 cars - DAIKOKU, UMIHOTARU
...and if you want to know how to book follow this link