Teresa, I did a 13 day "Journeys of Paul" to greece and turkey last October. It was not described as being really physical, however.....
Schlepping from one end of the istanbul airport to the other as we arrived from Chicago and grabbed a local plane to Athens was a brutal 3 mile walk, brisky, w luggage. and then the acropolis was that afternoon. I ended that day with inflamed plantar fasicitus in both feet that I was then babying along for the next 12 days, each of which involved seeing archeological sites. I thought I had chosen well, a pair of Nikes and a pair of lug soled step in lands end shoes, but neither were up to the task. Most of those historical sites have cobblestone rubbed as slick as glass by centuries of the faithful and the curious. I don't know if waterproof is important, but oh my golly, hiking boots might have saved me. (I did use one hiking pole each day, but that did not save my arches) a few folk in my group had light hiking boots they changed into
Cappadocia was one of the places i had to drop out, yes, some of those places have stairs... up the mountain, with no hand rail or sense of anything that would stop you from tumbling off the side. I was greatful for hiking pole