1k frnds a day is not a small job and it requires the professional expertise to do so. i gues its quiet hard to get exact 1k frndz unlesss you are a celeb.
it is very hard to reach even if you are a celebrity then its very hard to reach. So I am sure 1000 in a day is not so easy and even if you send more requests then fb will not allow it. But there is a condition based on which you could do that just put some offer like first 500 friends will get something then there might be a chance that you will get 1000 visitors