Hello, I would like to ask 3 questions - 1. What is the best way to arrive from Amsterdam, Station Zuid (near the WTC) to the festival? Is there any direct train from there to the festival or bus? 2. How should the whole journey takes if I can leave Amsterdam at let's say around 12:30 pm? 3. How do international visitors recieve their day tickets? Thanks!
You'd need to take the train to Landgraaf station, check the times a bit closer to the festival for the best route. From there it's about a 30 min walk to the festival terrain. I'd expect the whole journey to take ~3h one way. For the ticket info, check the website, it should be on there but you can download the Ticketmaster app where you bought your ticket as well.
If you don't have anything booked yet, I would
strongly suggest to book a hotel for the nights before and after the festival day a bit closer to the festival terrain. Either somewhere near Landgraaf, Valkenburg, Heerlen, or Maastricht are all better options than Amsterdam. There's extra trains going from the station due to the festival but it's likely that you have to miss parts of the headliner to be able to get back to Amsterdam Zuid with public transport.