There a total of 8 x 12 = <<8*12=96>>96 seats on that plane.
Only 8 x 3/4 = <<8*3/4=6>>6 seats are allowed to be seated in each row.
So, only 6 x 12 = <<6*12=72>>72 seats are allowed to be seated on the plane.
Therefore, 96 - 72 = <<96-72=24>>24 seats will not be occupied.
#### 24