I opened the thread thinking I'd do well, know lots of answers.
The questions are really questions nobody ever thought about. If I hadn't collected them myself I wouldn't know the answer too.

So how long do we have to wait for the answers?
Till the end of the games of course.

Actually, I shall give them to you any time you wish, but you could at least try to guess some (partial) answers:

Largest country without any medal?
How many times has the record holder taken part in Olympic games?
Which sport could it be in which a man and his daughter can team and (nearly) did win a medal?
Which country is the most succesful in per capita basis?

Norway, BTW, is a very good guess for most successful country on per capita basis. It has the third rank.

Wolfgang