McCain has a total seating capacity of 1,751. This includes 45 movable seats that can be placed on the fore stage lift. The seating of McCain is broken into two different sections: the orchestra pit and the balcony.
The orchestra level features 927 fixed seats (972 with seats on lift) in continuous rows, known as continental seating. There is space for eight wheelchairs in the orchestra area. The balcony has 809 seats arranged in a more traditional fashion with aisles. The distance from the stage to the most distant seat in the balcony is measured at 105 feet, and the orchestra level is 75 feet from the stage to the last seat.
The fore stage lift, located in the orchestra level, is 12 feet by 50 feet, and it may be used for an additional 45 seats. Upholstered seats like those in the rest of the auditorium slide on to the lift using tracks. The lift may be raised to the stage level to extend the stage to the orchestra-level seating area (thrust stage), or it may be used as a freight elevator for items stored in the basement. It can also move wardrobe crates to lower-level dressing rooms.
At stage level there are two star dressing rooms and a sizable scene shop acoustically isolated from the stage. The green room and costume shop, along with four more dressing rooms, can be found on the lower level.