A trip to Patagonia requires good health and mobility. Time is scheduled for rest but your itinerary has a moderate pace, involving activities and transportation from place to place to ensure you have maximized opportunity to interact with the wildlife and local culture. Consult your physician if you are in doubt about your ability to enjoy this adventure.
Visiting Parque Pinguino Rey involves very little walking, over even ground. Magdalena Island is not large but you have to be careful not to step into penguin nests, which are burrows in the ground. Walking here is not difficult. Estancia Cerro Negro is also easy walking. The rest of your excursions involve a good deal of walking and standing, with nowhere but the ground to sit. You should expect to walk unassisted and stand for up to three hours, twice a day. Terrain can be flat to rocky and involve hiking uphill and downhill in places. Rain and wind can make the ground muddy and slick.
Travel in Patagonia is by road, which is normally in very good condition from Punta Arenas to the entrance to Torres del Paine National Park. From there the road can get rougher, depending on the recent weather and road works. Each of the drives from place to place on your itinerary are about ten hours, including the scheduled excursions and meals along the way, leaving anywhere from four to six hours of actual driving. The flights between Punta Arenas and Porvenir are 15 minutes each.