LISA has a couple different "tracks": Invited Talks, Refereed Papers, Guru Sessions, and so on. Then there is the unofficial track: The people that hang out in the hallway and talk.
This is where you learn the dirt.
Which products are /actually/ more reliable than others? Which open source products have the best track record? Which bar in the local area has the best beer?
The hallway track knows all these things. Just hang out and join the conversation.
See you there!