OK, just got the confirmation from my W that she wants to try RetroV, and that she is really willing to try, AND she understand how long of a day Saturday is, so I guess we will see how the phone calls that AnotherStander mentioned work out...
If she's in an EA and she's like 99.9% of WAS's then she doesn't consider it an affair, so it won't be an issue.
You'll start Friday evening and it will be a late night. Saturday is definitely a full day, but be ready because Sunday is packed too! It'll go by fast, but it is emotionally draining. You'll be exhausted by the end of it. Regardless of what happens in your M you will learn a ton about communication that you can apply not just to love interests, but to your kids, coworkers, friends, etc. But make no mistake, the focus is on saving marriages. It's a great experience.