No, it is up to you. We would ask you for the city where you will depart for Tibet from and apply for the Tibet Entry Permit (Tibet Visa) based on the information you provide. So, you just need to tell us where you will take a flight or train to Tibet, and we will list it on your Tibet Entry Permit. Please note that currently, the government only allow international tourists to travel to Tibet by flight or train.
The photo copy of your passport and China Visa are the required documents for the application of Tibet Entry Permit.