They really take care of their gentle walkers. Just make sure that you get in the "pink" group when you arrive at your destination. In Salamanca, they even arranged taxis back to the restaurant for those that needed them. They are very accommodating in Lisbon and Porto also. We were in Lisbon on our own before joining the pre-stay group. We took a Tuk-Tuk tour which worked out well because he drove you as close as he could, so you were not climbing hills. Once we were on the pre-tour, they also had different groups for those that had difficulty with hills and stairs. It is a great trip.