Just to clarify something, I don't believe we were invited to anything. You sponsor and you get a ticket for these type of events. Just want to clear up this misconception that's been floating around a lot.
PC will be able to meet a bunch of people who have connections to the higher ups and he undoubtedly already has lunches/dinners scheduled ahead of time with a few slots open for impromtu ones. It should help raised awareness and maybe get someone he hasnt been able to meet with a chance to speak with them all at one location.
I go to these all the time in my field.