On the one hand, if the parents find out information like hashkafa of the both of them and their values and goals and other things, then the two already know that and just need to see if they would like to marry each other or not.
On the other hand, it could be that if they meet only a few times and they are Not interested at first, but then start to be interested, they shouldn’t discontinue because of a time limit. They should go out some more and see if they want to go forward.
Also, sometimes people have certain traits that don’t show up until later. Someone might have a temper that you don’t notice until later. So it’s good to see them in different situations to see how they react.
Of course, you don’t really know someone until you are married, but deffinately look out beforehand for good middos in different situations before marrying