Do you have any advice for potential travellers?
Take lots of layers, I think we were lucky with the weather as it wasn't that cold, but it's better to have more, as it's safe to leave things in the bus. There was still a lot of snow on the ground.
Seeing the Northern Lights is hit and miss, sometimes the forecast is promising but you don't see them, sometimes the forecast is not great but you see an amazing show. So when you do, be prepared to stay out late at night in the cold. Also, they can appear a bit dull to the naked eye, they look more greyish than vivid green, but you can still see the strands and the flares and don't get me wrong it's absolutely fantastic. But I would advise to have a DSRL camera with a fast lens (at least F2.8) and a tripod, then with the correct settings, Kristjan will help you, but usually ISO 800, F2.8 at 15 seconds, and the colours will pop on your photos. I truly recommend renting a camera and/or a lens if you don't.