We got there around 7:45pm, and I signed in. I was asked to wave my DL and "a major credit card" in front of them and was given a form to fill out. I turned in the completed form, and then we went foraging. Turns out the so-called "free food" was crappy sandwiches (mystery meat, too much produce, and mayonnaise on all of them), cookies, and soda; the only diet soda was diet Coke, and it was too late for caffeine if we wanted to sleep.
After a few minutes we saw other parties being gathered for presentations. Then a guy called my name and said, "I'm sorry, but we don't have enough hosts to go around, so we won't be able to show you the presentation tonight. You will, however, still be able to collect your gift at the window." It was all we could do to keep from laughing.
We stood in line behind a woman who was equally "upset" at not seeing the 90-minute presentation and "just" collect our gift.
Afterwards we checked the time: 8:02pm. Not bad for 20 minutes, and we had another 2:40 of free validated parking by the Cannery and Fisherman's Wharf!