Thanks for the detailed directions, although wouldn't it be the non-Schengen area as we are coming from ATL?
Also, we have access to the Luxx Lounge through Priority Pass. Worth a visit or just find a restaurant?
Well, yes you arrive from non-Schegen, but the minute you pass the German border, you have arrived in the Schengen area!
Sorry can't comment about that lounge, I have only ever used LH lounges at FRA T1!