@rob.brynelsen Great response, thanks for that! Yet another example of why I love JAMF and JAMFNation so much. A bunch of good ideas all around! So next year 2.5k devices

Wi-Fi Explorer shows seven 5GHz nodes. No problem connecting in fully packed main stage.

Right-click to show in new window, to get closer view.

Regardless of what the Guthrie folks say, @rob.brynelsen, they did not have enough available IP's yesterday with the /22 subnet, supernetted or not. However, overnight it seems they changed their subnet to a /21, doubling the number of available IP's. Much better.
And, better late than never, though I (and probably others) pointed out the insufficient available IP's at last year's JNUC:
https://jamfnation.jamfsoftware.com/discussion.html?id=12318#responseChild71429

It's a herculean effort to satisfy so many geeks, thanks for improving! :)

Sorry I missed this years JNUC. Last year was tough getting an IP for sure. Even with the change to a /21, the 200Mbps connection seems archaic (of course I'm not paying their bill) and don't forget the OP said, "My colleague and I each have 3 devices..." That's 6 IPs for 2 attendees. I'm not so sure that Rob's estimate is high enough. I hope to see you and lots of IPs next year!