I’ve got the credentials to back it up, but it’s an extremely rare day I’ve ever been asked for ID. If they ask, just say you don’t have it. It’s that easy, get 10% off! Heck, there’s a restaurant that I like that does 25%!!
This veterans day, take some valor for yourself! You’re a class war veteran!!! 
I believe this to be a mostly southern states thing, we don’t have them here and I was surprised when I heard about it too.
They’ve migrated north too, but mostly just big box hardware or sporting stores.
Lowes and Home Depot in Vermont have them, too. I always park in those spots.