Game registration opens this Friday. Which means that sometime this week, we will be locking the timetable and making a final decision on what games run when. In doing so, we will effectively be making a decision on how many player spots there will be in the convention. We will be making that decision based on the number of preregistrations, with a small provision for latecomers.
In other words, if you want to be sure of playing, you need to preregister, and you need to do it now. Leave it too late, and you may miss out.