Scenario: You walk into or link into a screen share demonstration. Scheduled in advance, agreed to by everyone. Maybe it's a small husband-wife run SMB, maybe it's an enterprise company with a team. You notice the decision-maker is not present. You politely ask, "Hey, where's DM, he had replied that he'd be here, no?"
Someone answers "Oh, DM can't make it today, something came up at the last moment. But we'll relay the information on."
Do you proceed with the demo or offer a reschedule for when everyone is present? Open ended responses welcome.