We have our itinerary in place for most of our 3 weeks in Greece, with reservations for places to stay. Initially three nights in the Pelion, three nights in Meteora, a night in Delphi, a full day exploring Delphi, then driving that afternoon to the coast near the bridge over the Corinth Sea. We then have a day that I am not sure yet what we will do, either drive to Olympia and see ancient Olympia and stay there, then drive to Nafplio for 2 nights, or if we would not like all that driving (or my husband does not want to see two archeological areas in two days), go straight to Nafplio for three nights there. It would be Sept 17, which is a Tuesday. Would there be much difficulty finding a last minute place to stay around Olympia, Nafplio or Corinth, if we want to keep our options open that day? We are comfortable with places ranging from camping to 4 star, as long as the place is in a safe area.

No there won't be a problem. I've done it several times and in peak season.

Thanks Odin. by the way, we will be staying with Jill, at the Old Silk Store when we are in Pelion. Thank you for that recommendation, she sounds like a delightful host.

Oh wow, hope you like it. Her breakfasts are very nice. It's beautiful in Pelion.