Took 18 minutes for 4 trucks tother day, with no problems. Get there at a busy time, just before the boat goes, and there will be problems. Assume 5 trucks in 20min? So, 15 per hour. 100 trucks (MSM holds 118 if full) would take over 6 hours to clear the trucks in. And we all know trucks dont arrive evenly spaced out, with drivers having loads of time left on their tachos.
Anyway, I aint a betting man, but even I would be tempted to have a punt that the door will be struck and jammed in under 4 weeks. Someone will start-up and drive out before its fully open.