I'm flying on an award ticket, all on Lufthansa metal, in first from Boston to Munich, in business from Munich to Frankfurt, and then business from Frankfurt to JNB. (I couldn't get an award ticket non-stop from Boston to Frankfurt.) I have a long layover in Frankfurt and am planning on leaving the airport. When I return to FRA, may I use the First Class Terminal as I will have arrived that morning on a Lufthansa first class flight, and am flying out on a Lufthansa flight? Sorry if this has been answered before -- I searched this site and the Lufthansa site and couldn't find an answer.