Final itineary

Looks like a wonderful tour. Enjoy! With three nights in Nafplio I would add a trip to Mycenae. Go through the Lions Gate, see Agamemnon's tomb (not really Agamemnon's but the dome is awesome), wander the ruins there that are a thousand years older than the Parthenon.

This looks like a good itinerary. I visited Sounion last year when driving from the Peloponnese back to Athens. It is not that far out of the way, considering all of the miles you will be driving throughout your trip. It was one of the highlights of our trip.

if choosing Sounion, try to visit durijg day, to contenmplate in peace, NOT at sundown because many tour busses arrive, at least in summer, and hundreds of people swarm in.

I like the idea of Sounion on way back to Athens. Yes, plan on arriving early afternoon.

If you still have an hour or two to spare, you can also take advantage of having a car to visit the Kaisariani Monastery. It's about 20 minutes east of Athens, on Mount Hymettus, in a verdant setting overlooking the city of Athens.

It is closed on Tuesdays.

https://maps.app.goo.gl/qpj75wmHvz63j3ndA

Is there any stops that I should consider besides Sounion/monestary near Athens? Drive part from Kardamyli to Cornith. Did Mani drive yesterday, beautiful.

From Kardamyli to Athens, it's a 4-hour drive non-stop. If you stop in Corinth and other places on the same day, you won't be able to visit the Kaizariani Monastery, which closes at 3 pm. However, you can still go to Cape Sounion, the archaeological site is open until sunset (sunset at Cape Sounion is a popular day trip destination).

Depending on your itinerary, you could also visit the archaeological site of Ancient Messene, 45 minutes north of Kalamata. Allow at least an hour to visit the site.

https://greeking.me/blog/greek-mainland/ancient-messene

Google Maps:

https://maps.app.goo.gl/18wGMY9EsCxhRemv9

JoLui,
Visited both the monestary and Sounion. It was a nice finish to my trip. I dropped the car off and arrived back in Athens for dinner. Great suggestion!

Thanks for the feedback! It seems everything worked out as you planned. That's great!