<p>There are several orientation sessions, and to be fair to all, only so many spots are available per orientation. Internationals for example attend the very last session. As War Chant says, they do open up a # of places each orientation. Remember though that upperclassmen registered recently this last month, so some spots in certain classes are already taken.
Just make sure you have back up classes planned before your orientation session, and look into the system so you are prepared to register quickly for popular classes.</p>