A friend and I plan on driving ourselves around in May following this route: Athens-Corinth-Mycenae-Epidaurus-Tripoli-Sparta-Olympia-Delphi-Meteora-Athens. We've never been to Greece and need lots of help from you guys.
1. Time. We have a maximum of 5-6 days to spend, is there enough time to go to all those places?
2. Cost. Are we better off renting hotels on walk-in basis than joining a tour?
3. Navigation. What are the roads like in Greece as compared to U.S.? Has anyone used a GPS system in Greece? I have a GPS receiver but could not find any accurate maps of Greece.
4. Is there a car ferry from Patra that will get me close to Delphi?