After bartenders and waitresses getting dinged multiple times for not carding an under-aged person sent in by officers to test them, the local Hooters now requires them to card everyone, no matter what age they look. They have funny/flirty lines they use on the people that look like their grandparent to deflect the anger.
I always find it fascinating when people are angered because they didn't bring their driver's license. It was ingrained in me early on that I had to ALWAYS have my driver's license with me, because I could and would be arrested for driving without it, or worse.