I am flying LHR-SIN-SYD on BA15 in February. This is a long time to be on a plane but hopefully it will be eased somewhat by being in F. My question concerns what happens during the refuelling stop at SIN. Do SYD pax get a chance to get off the plane and stretch their legs or do we stay onboard? My suspicion would be the latter. On the return leg I will be flying SYD-DOH and then DOH-LHR on QR F so it will definitely get the chance to stretch my legs at DOH. I am looking forward to comparing the QR trip back to LHR with the outbound trip.