The answers to your questions are pretty much confidential to the general public. Sorry, but similar to attendance figures, these statistics are not generally disclosed.
The best (and funnest) way is to try to figure this out yourself. Assume a few empty seats and set your watch to the time it takes between trains/launches/or ride vehicles.
The one thing I will state is that Dueling Dragons is the highest capacity roller coaster on the planet (6 trains x 32 people per dispatch) if run at it's full potential !