We went in August 2020. We were supposed to go in April but everything was cancelled of course. In the end it was for the best as we had pretty good weather all week. No Northern lights though.
We spent a week there to avoid too much driving every day.
We chose to stay in apartments most nights and self drive so that we could have our own schedule rather than be rushed.
We stayed 3 nights in Reykjavik, 3 nights in Vik and the last night in the Northern Lights Inn close to the Blue Lagoon and airport.
Day 1 was Reykjavik. Unfortunately on a Monday Hallgrimskirkja was shut but it was nice on the outside! We went to Perlan which set up the rest of the trip really nicely. It is Iceland in a nutshell.
Day 2 was the Golden Circle and Secret Lagoon
Day 3 the DC snorkelled in Silfra early. Strongly recommend Tröll Tours for this. We then drove to Vik via Kerid crater and lots of waterfalls.
Day 4 we went to Reynisfjara beach which is stunning, watched puffins then did a glacier hike, again with Tröll who were great.
Day 5 was a boat trip on Jökulsárlón Lagoon right up to the glacier. It is a very long day's driving there and back.
Day 6 was a drive to Reykjanes peninsula via the Lava Centre, a trip into a Lava Tube and then on to the Blue Lagoon.
We kept our plans very flexible due to potential bad weather. We booked the trips while we were there.
We ate in a few nights to keep the costs down. But then there was a nice craft beer place in Vik where DH's beer was about £20 IIRC!
Plus point of self drive was definitely the cost and being able to stay as long as we wanted eg at Geysir and Kerid Crater and have a walk without being rushed. The downside was missing out on lots of the facts and tidbits that a guide can tell you.
Finally we didn't actually get any currency. Absolutely everything was cashless.
Sorry. That was long and self indulgent but i loved Iceland. I had wanted to go for 25 years before i actually got there and it did not disappoint.