Permits for visitors with mobility impairments can be obtained at the Grand Canyon Visitor Center. National Park Service provides wheelchairs for use by park visitors. It is very close to the park headquarters, yet serene and peaceful. No permits are necessary to camp here but advance reservations are a must particularly during peak season. Hiking the inner canyon trails up to the river can be challenging.
Climate is extremely dry all through the year and temperatures soar inside the Canyon in summer.
Adequate planning in advance is a must. During peak summer, the trails may be closed by the park service to prevent serious heat related accidents inside the canyon.