which offers an interactive experience to food preparation. The passengers' dining arrangements on board are dictated by the type of accommodation in which they choose to travel. Around 85% of passengers are in Britannia class, and, therefore, dine in the main restaurant. However, passengers can choose to upgrade to either a "junior suite", and dine in the "Princess Grill"', or a suite, and dine in the "Queens' Grill". Those in the two latter categories are grouped together by Cunard as "Grill Passengers", and they are permitted to use the "Queens' Grill Lounge" and a private outdoor area on deck 11 with its own whirlpool.Liverpool Daily Post "Queen Mary 2 Liverpool visit: The ship that offers her passengers 'trip of a lifetime'" 21 October 2009 This feature is also present on both Queen Victoria and Queen Elizabeth. However, all other public areas can be used by all passengers. As the Britannia Restaurant takes up the full width of the ship on two decks, a 'tween deck, called Deck 3L, was devised to allow passengers to walk from the Grand Lobby to the Queen's Room without traversing the dining room mid-meal. The deck consists of two corridors that run beneath the upper balcony of the restaurant on Deck 3, and above the main dining area on Deck 2. This is why the balcony of the Britannia has tiers that step up towards the hull. This arrangement is illustrated on the hull where there is a stack of three rows of windows in the area where the main restaurant sits, the two upper and lower most rows illuminate the dining room, while the centre row serves Deck 3L. There is a similar arrangement through the Royal Court Theatre. As well, the passages that run on either side of Illuminations on Deck 3 ramp upwards to compensate for the change in deck elevation between the entrance to Illuminations and an elevator bank forward of the room. More than 5,000 commissioned works of art are visible in Queen Mary 2's public rooms, corridors, staterooms and lobbies, having been created by 128 artists from sixteen countries. Two of the most notable pieces are Barbara Broekman's tapestry, an abstract depiction of an ocean liner, bridge, and New York skyline which spans the full height of the Britannia Restaurant, and the British sculptor John McKenna's sheet bronze relief mural in the Grand Lobby, a seven square metre portrait