Being from the USA, SNCBInternational really made the process of getting from one country to another a lot less of a headache. I went from Amsterdam to Brussels to Frankfurt and then back to Amsterdam using SNCBInternational the entire way and it couldn't have been any simpler, especially in 3 countries with 3 separate languages. Another note, I planned all of my train rides literally last minute (not for the faint of heart, please, plan accordingly if you're traveling) and it really did streamline the booking process. Just remember, when using a calendar, unlike most instances in the USA where the calendar week begins on Sunday, SNCBInternational, as well as many other things begins with Monday. Triple-check everything!! It was MY mistake when I booked a ticket on the wrong date, but SNCBInternational made it very simple to fix MY error.