We thought this would be a fun way to spend our first night in SF, and planned on spending a full day here later. However, after just a couple of hours, we felt we had seen everything that interested us. We were expecting more of a science museum (with experimental exhibits) and not so much aquarium/rain forest. Don't get me wrong, it was nice, just not what we were expecting. The crowd was VERY young, which I am not. But even my 25 yr old daughter felt old. They seemed to be there only for the party, and I wondered why they didn't just opt to go to a club.
Excellent tour behind the scenes of the CAS, also the Rain Forest, was able to use the telescopes on rooftop too.