Honestly I really enjoyed everything. But if I had to pinpoint a favourite I think it would be how often we saw the northern lights. Due to the extreme weather conditions - a blizzard in October, we saw them almost every night which I think makes us really lucky, as I was expecting it to be much harder to see them. Additionally, I was pleasantly surprised by the adaptability of our day plans by our TM and Driver when we needed to be kept safe, and had delays to departures on some days due to snow, icy roads, and strong winds - we still managed to see everything we would have in the end and made some surprise pit stops too! I was super stoked with the glacier hike, but it would be even more incredible if it was longer. The only way I think this trip could be improved would be to have the start time earlier so the first day is actually a full day, and start the travel straight away! Why do we need to stay in Reykjavík on the first and last night? It could easily be changed to make the trip feel like you see even a tiny bit more.