I thought that it was too good to be true.
OK folks, don’t get over alarmed by my previous post. The J and F lounges are not going to get packed with plebs.
I have just made a dummy booking BKK-LHR in Y within the date range given. And the following info appears:
"Fly Emirates from Bangkok to Europe, the Americas, Africa, and the Middle East and get a complimentary 4-hour access to the Marhaba Lounge while waiting for your connecting flight in Dubai. Enjoy an open buffet offering a variety of hot and cold cuisine and unlimited beverages, freshen up with the shower facilities or stay up to speed at the fully equipped business centre with complimentary Wi-Fi access. This offer is valid for bookings on EK351 or EK377 for the Bangkok-Dubai sector".