When would defender have more then 1 unit in courtyard and why? Can always just move them 1 by 1 so he never has more than 1 there?
Also about wall destroying objective for GP, if I destroy both wall components on one wall, and next turn defender repairs one, and I destroy that 1 that he repaired, do I get the GP?
Units coming from the hospital are placed in the courtyard.
As far as number 2 - you are correct, that would work. Sometimes the defender might not repair a destroyed wall to not trigger you re-breaking it for the GP.