Originally Posted by Check Essential

Please don't call the CPO. You don't want to hear the answer.
Here's the deal - the landside parking for commuters is on the "wink and nod" system.
The TSA apparently doesn't have a problem because it does not bypass security.
As long as commuters aren't using the airside lot, the feds don't care.
If there's no security issue, it doesn't matter to them if you ride to the terminal on an employee bus or a commercial parking lot bus or the back of a Harley. What's the difference?

That leaves Delta management.

Its a gray area with the company. Please don't force the issue. Just be discrete and don't abuse it.
A lot of ATL commuters would be upset if you ended up causing strict enforcement.