There is some networking but that has a pretty dubious cost\benefit. You can treat it as a day off that might help you view your startup from the outside. If you are in a very isolated place then a bit of startup buzz might be nice. However, if you've got shit to do, I wouldn't bother and just watch the talks on youtube at your own pace in your downtime.
The talks were "inspiring/motivational rather than practical/tactical", and I agree that you can get 95% of the value from the video streams. I think that being in the presence of "luminaries" will bring you back down to earth realizing that they're just ordinary folks at the end of the day.
As for networking, like most of these things your mileage will vary depending on your base networking-quotient * luck (who you happen to talk to).
There are definitely worse ways to invest a Saturday.