Are these tours physically demanding?

To make the most of the unique places we visit, all of our excursions require a moderate range of mobility. This may require guests to walk lengthy distances, hike over uneven or slippery terrain, climb numerous flights of stairs, and be able to enter and exit our Mercedes-Benz Sprinter van which has a high step. If you have any joint or mobility issues, breathing difficulties, a troublesome back, or you know you are pregnant then this might not be the right tour for you.