This is going to be a real hoot for the jumpers. My very first night equipment/combat simulation jump was from a C-47,on St.Merie Eglise drop zone at Ft.Bragg. I was loaded to the gills with equipment,including a spare 50 cal M-2 MG barrel,and those babies are HEAVY!
It was kinda like waking up and finding myself in the middle of a WW-2 movie. Unbelievably cool!
I never even saw or heard of anyone jumping C-47's after that,so it may have even been the last time they were used as mainline active duty paratroop aircraft.
One thing is odd is that if you are towards the front of the plane,you start out with your static line over your head,and the closer you get to the jump doors,the lower the line is. IIRC,it is about knee level when you go out the door.
Those guys are in for a real treat and a historical thrill.