The guide was very knowledgeable. For having only two days in Iceland, this was the perfect tour to get to see so many of the beautiful sights. We would suggest this to anyone travelling there.
We got to see the Northern Lights! Best part was that the night we booked they cancelled it. Luckily we booked for the first night of our trip and we were able to go on the second night. I would suggest that you book this tour early in your trip in case of weather so you have many chances to see it.