I flew Svalbard 28 last night myself. Night, with the weather turned to "winter storms". Popped out just at the right place to finish visually. Using a 737-300 downloaded and tweaked, with a photo-realistic panel.
Helps keep the skills honed while me Beechcraft is indoors getting some preventive TLC this winter.
Just for fun I have an old US Air 737 Ops manual at home (so old some pages are still labelled "Piedmont", and the data is incomplete for the 737-400 as they were just coming out then); so before each flight, I go through the trouble of calculating needed fuel for destination, alternate and hold, adding some payload, figuring out a take-off weight, and then pulling out the V-speeds for the takeoff. And at landing I pull out Vref for the approach. For Svalbard my alternate is my departure point (Tromso) so the takeoff at Tromso is made near MGTOW for a basic (LGW) 737-300.
Mike