Hi, this may be a silly question but I will be taking a train with my pass from Amsterdam to Lille in October. My train from Amsterdam to Bruxelles doesn't require a seat resveration nor is one available to purchase, but the connecting train from Bruxelles to Lille does require one. If I buy the seat reservation for the connecting train how do I ensure the first train won't be fully booked that day ? And what happens if I pay for the reservation and then the first train is all booked that day?

Best answer by thibcabe
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