By ChemMJW in Reddit
I had a minor degree of contact with Opus Dei in Austria, both with priests and lay members. I personally never witnessed anything but good and faithful clergy and laity attempting to conform their lives to the teachings of the church as much as possible. After they had known me for a few months, they gently asked me whether I might feel a call to join Opus Dei as a lay member. I said I felt no such call, and they never brought it up again. No pressure or manipulation or any of the Hollywood nonsense that was in the DaVinci Code.
So my personal experience with Opus Dei has been entirely ordinary and positive.