The Queen Mary Exhibit Hall is a vast space comprising five decks that once contained the #5 Boiler Room, the Forward Engine Room, the ship's Hospital and the Pantry for the Main Galley.

Today, the Exhibit Hall comprises three levels that can be used en suite or individually. The upper most level on D Deck is 18,000 square feet and can accommodate up to 500 guests. The middle level on E Deck is 12,000 square feet and can accommodate up to 600 guests. The lower level on F Deck can accommodate up to 600 guests and spans 15,000 square feet.