I was just at Fandom and registerred for the 40K tourny
so I guess you can still do it until the 15th.
(Although I used the last sheet they had on display ...)
Not sure how many spots are left though ...
(Just so people know
It is $17 entrance fee (for Saturday or Sunday)
$2.50 to registerred per game
and if you want 0.50 for email confirmation.
It is $3.00 on Friday of the Con
or free 0.5 hours before the event starts