There are a total of 20 seats in Section 108 Row M at the Mandalay Bay Events Center. As you face the floor from the section, seat 1 will be on the aisle at the left (closer to the stage), while seat 20 will be on the aisle at the right.

Seating Layout in Section 108 Row M
Row M has a total of 20 seats in Section 108 (Seat 1 being on the aisle at the right as you face the floor)