Thanks. I think there is a way to get to the enrollment portal without going through cal central which crashed. That is probably why when he got back, seats were close to full.
Anyway he heard from one of the professors that they might expand MATH 54 as they made it a prereq for EECS 16A and there was heavy demand. Apparently they want to start small and expand as needed for budget reasons as it is harder to close discussions if they start big.
He can always take some interesting decals if he only gets only one of the two waitlisted courses.