We are veterans of Rick Steve's tours and have loved them and are now interested in the tour to Greece. We have this question. My wife is generally very mobile and we walk and hike everywhere and she is in great conditioning however she does have some knee problems on hills, although not so much steps. For those who have been on this tour, we were wondering how extensive the walking is up and down hills (especially steep ones) and whether it is a very frequent feature of daily walking and touring.
Thanks!