Thanks Khalid, seems like an empty flight. I got a good fare on the direct DXB - HKG - DXB in F (instead of the stopover in BKK which annoys me). Reason being (as quoted by the local EK office) is that the KWI - DXB leg is operated by 2 class, as well as the return on DXB - KWI so multiple class ticket.

Question is, on the return and while transiting in DXB, my flight out is 2 class but I arrived on a 3 class. Am I allowed to use the F lounge?