I have attended not more than ten professional society gatherings in 40 years. The site tours were great fun. The dinner meetings felt awkward, because most of the people who showed up were from the same large company, and I had no common ground with them, beyond hiring from or being in the same labor pool. We speak the same language, but their acronyms are opaque to outsiders, and we attach different meanings to the same common words.
Beyond that, I'd be careful about developing a relationship with anyone outside one's own company, for fear of giving away some tiny but commercially valuable piece of intelligence. It might be as nominally inconsequential as a personnel change in the Marketing department. Not even theft will get you fired faster. Note: news from the Engineering department has no great commercial value. Trade secrets do, and they may not be marked as such in any obvious way. Only idiots put actual important information in fluorescently colored interoffice envelopes marked 'important'.
You can learn a lot from the tradespeople at any outfit. They may not understand the math behind what they do, but they understand the physics right where they touch the world.
Mike Halloran
Pembroke Pines, FL, USA