Hi! I want to go from Brussels to Marseille but I only have to one country pass for France. My plan is to buy a separate ticket from Brussels to Lille (north of France) and then use my interrail pass to book the rest of the train to Marseille. This whole journey is on the same train, the TGV. My question is wether or not is is possible to do this. Is this the type of train where you have to check in or something in the station? Would I have to leave the train and then get back on it with the new ticket or just change seats at the most?
If someone knows this, please tell me! I am very grateful!!
Thanks so much