just to clarify: I originally booked a KL-flight early in the year and this was changed to a Privilege Style operated flight. I doubt that it will work when you already during the booking process see the operating carrier is Privilege Style.
In my case it has always been an email from KLM some week/s before the flight letting us know about the operating carrier. I do not book knowing it will be Privilege Style, not only because of their plane interiors but because their boarding process at AMS is consistently a mess. It is a subpar experience and product. Thanks for the clarification though, it makes much sense.