Jim's event adheres to a very strict schedule.
Arrive...
Better look at the gear on offer as this is first come-first served and you wouldn't want to miss anything.
Say hi to friends from previous meetings, grab something to drink, drop off what you brought for noshing, drinking, say hi to Jim and wander around until you find a spot to enjoy part of the day.
Never been any scheduled events but there have been some comparisons of phono preamps one year.
I'm sure the TT how to will be a well-announced event to those in attendance and you'll be able to get in on that if you hear it is happening. Not too early, need to wait for folks to show up and not too late because some might need to leave early.
Overall, a well-structured event.