As a somewhat autistic and thus an outside observer who is male and thus exposed to a lot more male reasoning than otherwise, and also frequently ignored so exposed to even more, I actually have to agree wholeheartedly about the whole dominance thing in common greetings. At least the bone cruncher handshake and the bear hug greeting are clearly dominance things among those I've known, as they'd talk about this crap in the breakroom at work. There are some guys who just give an overly firm handshake without meaning it, but it usually doesn't take them long to realize they hurt people and stop. — Ed Grimm 35 secs ago

My father has struggled with timeliness all of his life; as a result, I've been on the flipside of this question on numerous occasions. Since cell phones, our process has been to call ahead to the people waiting around the time we were supposed to have arrived, let them know our orders and our ETA. One person driving can't do this; they need to focus on driving. But when they've had a passenger who can work a phone and has the right numbers on their phone, it seems to me like it would be the thing to do. — Ed Grimm 37 secs ago