Yes, the pick up area will be packed. The first folks start disembarking a little after 7am. The last group will disembark around 9:30am. Sometimes they are ahead of schedule; sometimes they fall behind schedule. And no, you will not be allowed to wait in the parking lot for them as that is reserved for buses. If they are mobile, they can walk across the Embarcadero, and you can pick them up there.
I will be working traffic control on Monday.