You be lucky to get in last time i noticed it was fully booked for while.
Also loads of ppl on the waiting list but then again it's who you know may get pot luck.
Here is link for booking
http://rcracecontrol.com/?action=showracemeeting&id=68
Been closed since JULY, but they may bend the rules like most big events for some ppl.
(Not DIG at you guys though)