Hi, we are planning to travel from Brussels to Paris (13.08.2022 / 7.13 pm) with Thalys and called the customer service for seat reservations. But, I just realised that they gave us 1st class seat and now I can not call them again.
Anyone has the same experience? How did it go? I saw a post that someone can still board the train but need to pay the differences. However, I wonder how much the differences will be?
Any prompt response or suggestion will be very much appreciated since the travel date is coming soon and we will be travelling with a baby.
Thanks all and have a good day!