Thanks for the trip report. It's a nice break from all of the stupid arguing on this forum. You're right that Iceland is exceptionally beautiful and worth visiting despite the difficult weather.
It's too bad you didn't enjoy camping. However Iceland is more challenging for the camper than most places. Perhaps if you tried again in a place with fairer weather you'd enjoy it more. Also, freeze dried meals are nasty. From what I recall, Iceland's grocery stores were well stocked. We've found tortillas work great for making savory and sweet wraps. Mac and cheese is a staple too if we're tight on space. We add broccoli when it's available. And don't forget to sample the local pastries. Iceland had some weird ones:
