I just went on the Registration Page and saw the event is full and closed. Great for the community but not so great for me. Is there any type of waiting list in the event people cancel and spots open up?
There is not. Technically, the event is a benefit of membership in a professional association. The membership fee is non refundable, so canceling as such isn't possible. We do tend to sell out several months in advance, so it's worth keeping an eye on. 2016 should open for registration in October or November.
Though you won't be able to get a ticket for the NA summit this year (though if you're inclined to travel to Sweden, registration for the European summit is opening very soon), you can still catch all of the sessions on YouTube afterward. We've got recording equipment now. 🙂