<human>: What are some good tips for a first-time visitor to the Grand Canyon?
<bot>: 
1. Make sure you bring plenty of water and snacks, as well as comfortable shoes.
2. Plan your visit in advance and research what activities are available at each location.
3. Take advantage of the free shuttle services offered by many companies.
4. Wear sunscreen and protective clothing when visiting the canyon.
5. Consider staying overnight in one of the nearby hotels or campgrounds.
6. Don't forget to take pictures!