With the lack of any proper
GW GTs, all the
40K tournaments at Adepticon sold out pretty much in record time...the one that lasted the longest was the Gladiator (I'm not sure if all the tickets were accounted for before pre-registration ended or not).
Of course, you can always get on the waiting list and hope for the best, but beyond the Gladiator, I'm guessing the wait lists for the rest of the tourneys are probably fairly large already.
There are plenty of other games to try, however...I'm running a Space Hulk tournament on Sunday that doesn't require you to bring anything but yourself, plus this year they have flames of war and Warmachine/Hordes too.
Anyway, the best bet is to pick the stuff you'd be interested in and send an email to the
adepticon@gmail.com address and ask how big the wait lists are for those events and then based on that make the decision on whether or not to go.
Good luck!