nstuch: The stage and orchestra level seating is more or less at grade. You go up the Grand Staircase ( there is a view of it, looking down it, near the end of these photos ) to get to the Grand Ring and the Royal Box.
There are a couple of images of the Grand Ring that show the low dividers between the boxes.
The Glass Staircase rises from the Grand Rings to Rings 3 and 4.
Also, the "scalloped" ceiling in the top level ( Ring 5 ) is shown quite clearly in a number of the images. The architects have treated patrons in this upper level with respect - by not making them feel crammed in under a low ceiling as they often are in older theatres. The hall feels small and intimate, and the building has been designed to promote the feeling that theatre is a collective experience.
The photos from the stage show some of the horizontal rows of lights, of which there are 3 in all, hidden in the central "cloud" of the ceiling. The lower raking spotlights on the back wall above Ring 5 are also shown.
The view of the stage shows the rear stage, used for storing sets. There is another stage for storing sets to the left, as you face the stage. The fly tower is high enough to "fly" the sets for two productions while a third is playing.
The images taken from the stage also indicate how very good the sightlines are.