Do it! You donāt need to get a commitment from your husband to attend all the post-sessions before going, and Retrouvaille certainly doesnāt ask for such a commitment when registering. Go, take it as it comes, and perhaps your H will feel differently about the post-sessions after attending the weekend. (Incidentally, the post-sessions take a few hours once a week, not a whole day.)
If it makes him (or you) feel any more comfortable, there is no group sharing and no counseling during the weekend. While you might have the opportunity to speak with a priest or the presenting couple privately if youād like, you donāt need to and no one will know if you do or donāt.
I will be praying for you and your husband.