Well - you can simply look at the error message that I received.
"Coupon code "V4L Family10" is not a valid coupon code."
I do not know how to explain it. I tried it a few times and then was able to get it to work when I used lower case letters. By the way, I am using the latest revision on Firefox. Perhaps it has something to do with that. HTML can be tricky.
Regardless, I got my discount and saved over $140. Thanks guys.