generally 'walk offs' who are managing all of their own luggage (didn't put any out the night before) are usually the first ones off. Often as early as 9:30. As stated above those with the earliest plane and train connections to make are next off.
Passengers without connections to make go off next (unless they have all their own baggage in hand.) Usually they have the entire ship cleared by 11:30.
Sorry not to post sooner, but we've had wild and wicked weather in North Texas.....again.