The MECC Auditorium is a versatile performance space with a seating capacity of 1,078. Featuring classic red theatre chairs, it offers both comfort and style for audiences. A unique feature is the adjustable curtain, which can be drawn midway through the raked seating to create a more intimate atmosphere for smaller events. Known for its beauty and acoustics, the Auditorium is widely regarded as the premier performance venue in the Mackay region, making it the first choice for touring shows, concerts, and community productions alike.

The MECC Plenary Halls are a highly adaptable, multipurpose space designed to host everything from gala dinners, award ceremonies, cabaret and theatre performances through to trade shows, conferences, and large-scale community events. Over the years, the halls have transformed to accommodate a wide variety of setups, from the popular 'Footy Show' and elegant sit-down banquets, to children’s theatre and casual gatherings.

With their open-plan design, the halls can be styled with chairs, banquet tables, or even picnic rugs, giving organisers complete flexibility. As the space is fully indoors, air-conditioned, and weather-proof, it provides year-round comfort and reliability for both audiences and event hosts. This versatility ensures the Plenary Halls remain one of the MECC’s most dynamic and in-demand venues, capable of delivering memorable experiences for audiences of all sizes and styles.