Welcome to FlyerTalk. Be sure and don't check bags on the return. Do once, twice, three times maybe and you will probably never hear another word about it. Make it a habit, they might try and make an example out of you. Although, the RPU (Revenue Protection Unit) seems to be on extended hiatus for now.

BTW, on the day of the flight...look in advance for any little ole delay on that first flight and call Delta and tell them you will save them the trouble of the possible misconnection and you will provide your own transportation to ATL. They typically bite on this very quickly.