They had been saying 5000/hr. However, that was before they doubled the paths in the rotunda. Maybe they did that to get as many through that wanted to pay their respects as possible.
As quickly as they are moving, I would say 10,000 an hour would be about right. Nothing more moving then the changing of the Guard. One of the highlights of a trip to D.C. is to see the changing of the Guard at Arlington. I cannot imagine the emotion to see this in person.
Several times in D.C. was able to see the caisson carrying someone for burial. Nothing could compare to what I have seen on TV these last few days.
Wasn't even a Kennedy supporter (couldn't vote anyways) but to visit his eternal flame sent chills and tears into the eyes but then Arlington does that anyways but this is something really special and heart wrenching.
I heard on the radio that they're expecting almost a quarter of a million people to come through the rotunda during the time President Reagan is lying in state. Amazing.