From those in charge of the survey:
All of the emails from Friday-Sunday until the survey closed were forwarded to me this morning and I sent out a coupon email to them around 10 or so.
So as far as I know, every person that filled out the survey now should be covered.
if you filled out a survey, and didn't receive a coupon, please PM me with the email address the coupon was supposed to be sent to and I'll look into it