Bonjour Paris!
I took the train from Maastricht to Paris. It was a local from Maastricht to Liege, Belgium and then the high speed Thalys through Brussels to Paris. Local trains are very casual. There is a train every half hour from Amsterdam to Maastricht and you just walk into the station, buy a ticket and catch the next one. The high speed trains like Thalys, Eurostar, ICE and TGV all require reservations and seat assignments just like the...