You can go to the dining car without a seat.
but you have to order food to sit in the dining car. Dining cars are generally divided into breakfast, lunch, dinner and midnight snack. You need to buy meals or drinks at a certain meal time before you can continue to sit. In addition, if you can't buy a ticket, you can also bring a folding bench in advance.
The dining car on the train, like the restaurants outside, mainly provides catering services for long-distance passengers, so it will only be open when eating. The dining car is usually located in several cars in the middle of the train, that is, cars 8 to 11.
high-speed rail without a seat ticket
When passengers buy a seat-free ticket and get on the train, if they see an empty seat in the carriage, they can sit on the empty seat. Wait until the passenger with this seat ticket gets on the bus, then give up the seat and then find an empty seat again.
At present, some high-speed trains will have seat indicator lights. If it is a red light, it means that the seat is already occupied. When the indicator light is green, it means that there are no passengers in this seat for the time being, and there are no passengers at the next stop. Passengers without seats can sit safely. When the indicator light is yellow, it means that there are no passengers in this seat for the time being, but passengers will get on the bus with this seat ticket at the next stop.