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 13,000 square feet and can accommodate 400 guests. The middle level on E Deck is 12,000 square feet and can accommodate 380 guests. The lower level on F Deck can accommodate 600 guests and spans 14,000 square feet.