Is the contract signed by the tour guide to the tourist valid?

The travel contract is signed by the tour guide and is valid. In order not to delay tourists' tour time, the contract can be brought to the tourists by the tour guide who picks them up at the station to sign. The contract terms are the Zhangjiajie City Unified Tourism Contract, and the content is agreed upon by the travel agency and the guest in advance, such as: arrival date, travel itinerary, service standards, fees, etc. The travel contract will come into effect after the travel agency stamps it with its official seal.