Being able to report on coupons used on a booking (in Orders as well as Performance reports) would allow us to see how many tickets were sold via a certain promotion e.g we may use two different coupon codes for the same discount and want to see which one sells more effectively.

e.g Discount is 50% off for Drama School students

Coupons are:

RADA50

LAMDA50

MOUNT50

URDANG50