From the weekend I went to, at RV, no one is ever told about anyone's situation. Most of the presenters were either post crisis ready to divorce, just ready to divorce, or just starting to peice things together but having problems.
For me, it helped me develop love for my wife. I wouldn't say she was helped that much, but I've heard/read of others that had great moments for both. I think your best benefit should you go is that they focus in on the idea of rebuilding the marriage, not repairing it. After an EA or other issue, you may benefit to re-examine things from that light.
