"Attracting heavy visitation this year, the park has high demand for iconic hikes and experiences and can feel crowded during peak summer hours; some signature routes now require permits, so early planning is essential. To improve your visit, secure any necessary permits well in advance, opt for less-popular trails or campsites, check for shuttle or timed-entry rules, and pack extra supplies because ranger-led services may be reduced." - Stephanie Vermillion Stephanie Vermillion Stephanie Vermillion is a travel journalist and photographer covering culture and adventure for Travel + Leisure Outside, and more. Travel + Leisure Editorial Guidelines