If you are an army wife in Europe, READ THIS.
I just found out today that your gas coupons EXPIRE at the end of every fiscal year (Sept 30th). So what you need to do is take any remaining gas coupons that you have on Sept 30th to the Px to get a refund and then buy your new coupons for the next fiscal year. They are a different color every year so it's pretty noticeable and you won't be able to use any coupons that you've bought before Sept 30th, so be sure you don't lose any money on this!
Good to know right??