I've googled what sort of plug adapters are needed in Iceland and Scandinavia and from what I see, it is the same plug as used in the rest of Europe. I'm not worried about the electricity converter, I have that covered. I'm concerned about adapting the plug so it plugs in correctly. Can someone tell me with confidence that the same plug (prong) adapter will work in Europe and in Iceland, Sweden and Denmark? Thanks in advance!

Yes the same adapter works, at least in Denmark, Sweden and Norway. No experience in Iceland but I expect it is the same.

Yes, it will work in Iceland. Just there in July and used it. After Iceland used it in Paris.

Double confirmation onIceland. We were there last Spring. Used our same adapters in Iceland and then Switzerland.

Thanks everyone!