I don't see what's so difficult for the players.
You are required to be at the meeting at 8:55 AM. We start the meeting and intend to start it at 9:00 AM, in front of a settled group. Seems clear to me. No confusion. No invitation for 'free thinker' to come up with a better idea. Your problem is to be there at 8:55 AM. Don't worry about when I start the meeting.
Why do some players just have to say "Hey, I make millions. I should be able to decide on my own to show up at 8:58 AM. Why to I have to arrive when you want me to."
That would be because we are in charge and responsible for controling a large group of egos, pay you millions and don't care what you think about when meeting should start.