That's it - that's the entirety of it.
The dirty secret is conferences would be much better if they simply had no sessions scheduled at all, and locked everyone in the ballroom for the entire day.
(To be honest we do have a few short talks and an agenda to guide the discussions, but these are mostly requirements of the funding that we've found)
I've been to conferences where I simply forgot to attend any talks at all, simply because I was too busy/having fun chatting to people.
A lot of the more "professional" conferences have stands just for paying sponsors though, and usually not a lot of them. They tend to be a lot less lively than open source conferences and the like which allow any ol' open source project to set up a stand. I like stands because they're a good conversation starter, and in many ways also like a presentation yet a lot more informal.
Unfortunately all of that died with COVID in my area, and hasn't really started back up since :-(