Under the Adobe license can I download a copy of InDesign v.? on my MacBook at no charge, while my iMac (where InDesign is currently installed), is being repaired?
As long as you don't already have two computers running it, it should not be a problem.
Yes, if you're using CC just download from Adobes webpage and sign in when promted.
If your license is active on more than 2 computers, you can choose to log out all units using your license and then sign in on your MB.