San Francisco is built around the Bay, and with the Golden Gate Bridge one of the main tourist attractions, sailing around the Bay is a good way to familiarize yourself with the city as well as see the sights. In theory. We bought this ticket as part of our CityPass, and having failed to get tickets to Alcatraz, decided to go on the cruise instead. My tip is to make sure you go on a clear day.
The cruise was nice to start off with. We left from Fisherman's Wharf, getting a good look at the sea lions on the way. We then sailed along Golden Gate Park, with the audio commentary explaining what we were seeing. The closer to the bridge we got, the mistier it got, and the weather turned absolutely freezing. The automated guide continued, telling us what we were seeing now--except we couldn't see a thing, even when we were right under the bridge. It turned into a bit of a comedy at that point. It was quite cool in a spooky way, as the mist was so thick and everything was so still. It was good to get back towards Fisherman's Wharf, though, and warm up again.