I think technically you SHOULD get the 1000 pt Diamond Amenity during PL stays (at least according to the T&Cs). However getting them to post is another matter. The stay won't post, therefore you'll have to call in to GP to get the Amenity specially posted. They probably will have to go to a supervisor who might deny you or might not. Basically, its more trouble than its worth to choose the points as a Diamond Amenity, that's why other posters here have learned to just take the easy way out and choose a food and beverage option for the Diamond Amenity....................^