When we do the MF, we usually hit Cache Bar between 10:00-11:00am and we are often alone on the ramp.......for a little while at least. If you could leave Cache Bar around 9:00am you'd avoid the crowd there, but you'd still be in the mix at Corn Creek. The ranger will still need to check your gear, do your permit paperwork, do your camp assignment if you are doing any reserved camps, and do the LNT/ safety talk with your group. If the planets align and you are lucky, you may get away from Corn Creek in a timely manner.
"We are all visitors to this time, this place. We are just passing through. Our purpose here is to observe, to learn, to grow, to love....and then we return home."
Australian Aboriginal Proverb