I think you are right mikliz97. We should go into Reykjavik and spend there-tour day there. I’ll start researching hotels and sights. I’ll read peoples’s trip reports. Thank you.
FrankII - from what I understand, the tour gathers at KEF, gets on the bus, and heads into Reykjavik for the day’s activities. They do offer us the option of meeting the tour at the Hallgrimska church at a set time - assuming that’s where people disembark the bus and start the walking tour. After the city activities, we all head to Geysir for day 2 Golden Circle. At some point, the tour does head to the Blue Lagoon- otherwise I’d totally take up your suggestion to go there on the pre-tour day.
So onwards with the Reykjavik pre-tour day research. I think maybe we’ll skip the “key sights” as that will probably be covered by the tour the next day. So we’ll just walk around, sit around, look into cute shops - it will be a Sunday 8/2. Hope things are not closed on Sundays. We won’t have a car..otherwise, I’d go to Costco to have a look around hehe.
Thank you both for your help! Any insights on off the beat places continue to be welcome!