We will arrive in Athens 6 days before our cruise ship departs. We have decided to rent a car, and travel to Nafplio for 2 day/overnights in Nafplio, on day 3 we travel to Delphi to meet a local guide to show us around the ruins and museum with one overnight. On Day 4 we drive to Meteora for an overnight, meet our guide to visit the monasteries, and after touring for 5 hours we leave for Athens. We will droop off the rental car at this time.
We then have 2 nights in Athens, our hotel is in the Plaka district. Our guide in Athens has suggested that we spend Friday in Athens to visit the museums and archaeological sites, and on Saturday (our last day), we will take a private day tour of Epidaurus/Corinth/Mycenae from a car before being dropped off at GalataPort.
Our Athens guide said the last Saturday of each month is free admission to the Acropolis and museums for locals, and many of the sites in Athens are terribly crowded.