You don’t want to miss a thing, so walking and standing for longer periods of time (2-3 hours) isn’t a big deal. A moderately paced two-and-a-half-hour walking tour, covering several miles, hills, and uneven surfaces, is no problem for you. Walking four miles over the course of a day is very doable, as is climbing into and out of various modes of transportation (tuk-tuk, cable car, zodiac, etc.). You can climb three flights of stairs easily and handle altitudes between 6,000 and 9,000 feet. Expect some longer days balanced with free time to recharge or set out on your own adventure. This level is not a fit for travelers who require mobility assistance devices.