My fiancé insists on registering for our wedding, but I'm not sure how we tell our guests where we have registered.  I'm not having a bridal shower, so I can't include the info in shower invitations, and word of mouth won't work too well because no one really knows each other.  What should I do?  I think sending it separate FYIs for registries is a bit tacky, but is there any specific etiquette?   Thanks!!