If you are planning to see the Great Wall of China I suggest don't go during tourist season. bring water and snacks plus a hat or umbrella, some shade cause it is really hot! Walking shoes and be prepared to walk/ trek. It is a journey, but a site to see. Always take someone who knows the area and for a more relaxes fun experience take the slide down! It would leave you wanting to go again and again and worth the trip up. Have fun!