I'm sure it's common for students to reject 1-2 recommendations for admission to a graduate school, because they often apply to several places and sometimes they get accepted in more than one place. But what impression does this give to the graduate school when the student doesn't accept the offer for admission (not sure if this is the correct term)? Specifically universities in Europe where a lot of them don't have application fees. If you apply again in the future, are they likely to not accept you based on this information they have about you from the past? Is that information used at all?
In my case it's admission to a Master's program.
Additional question: if I got accepted to my first choice, would it be better if I told the other universities to cancel my applications?