I think most consolidator tickets aren't on a high enough fare class. On the back of the coupon there is instructions for the travel agent to use. You might get away with it, but when the coupon is rejected by CO when the travel agent sends the coupon in, the travel agent might stick you with the 100 bucks.

You aren't supposed to use the coupon with the Z fare to Europe right now. (so it seems, but doesn't say so on coupon....it might be ok, but people have different opinions) I was able to use it by continuing to call back to speak to a CO ticket person who looked it up and said I could use it. She put the coupon code in the reservation and I wrote the reservation number on the coupon and sent it in. Two days later it was confirmed.

You can always try, but it's a little risky. Are consolidator tickets even expensive enough to justify using the coupon?

Sail a Nacra