No, I have a friend who does not want to meet his birth mother, yet he has met his birth sister and she has visited him and stayed at his house. (his birth mom/sister live overseas)
It was nice that his parents tried to keep contact thru letters and pics, open adoption is the way to go.
My wife and I adopted a baby boy 3 years ago, he just turned 4 and we have an agreement with the birth parents that they see him once a year......we thought it was best for our son
to know his birth parents. The first visit went well, but this past summer they did not show up , hopefully they will make it this summer !