Answered by Elizabeth from United Kingdom | Mar. 14, 2018 22:58
Hey, Marcia. Yes, it is necessary to book in advance. For your convenience, you are advised to book the tour in advance. If you wanna a reliable travel agency, TravelChinaGuide.com is a recommended choice. My friends joined their Simatai Great Wall Tour Package last year and they had a good opinion on this company. If interested, their contact information is travel

travelchinaguide.com.