Returning to Greece

I've booked flights and eight nights in the same hotel where I was for Christmas. Athens, here I come, whooooo hooooo. Hoping a combination of good weather and no public holidays will give me the flexibility to rent a car and drive out to see some sights, either up at Thermopylae and Delphi, or down on the Pelopponesian peninsula, with Mycene and Olympia. Either way I am bouncing with excitement!