To get souvenir tickets, contact the Chief Public Relations Officer (CPRO) of the railway division that is running the Vande Bharat Express on its first journey. Request a commemorative ticket at the train station or platform office a day or two before the first run. As my experience has shown, the operation may be challenging, thus patience is required. For more detailed information on how to obtain these tickets, you can check out this article: How to Get Souvenir Tickets for Vande Bharat Express.
Some foreigners deboarded as well. Also, how to take a proper image of a VB when there is no proper SB to take of it. The best I could do was take the coach's pic where the train number is visible.
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