Free Walking Tour. We almost were not so fortunate. We landed at 10am and had to wait over an hour for the shuttle that would take us to our airport hotel, resulting in a mad sprint for the local bus into town in hopes of joining the noon tour. Say what you will about the Greek economy but I can vouch that their public transportation is on point.
The two people who sprinted up to the group standing around Syntagma Square at 11:58am? That was us. We barely made it. Had we not, we we would have been hosed since our plan B was "to walk around and look at old stuff". Plan A was definitely more edifying. Led by our cheery guide, Maria, we were soon underway.