Having just returned from a Walibi Holland, I thought I’d share some information with regards to visiting via public transport (also for my own benefit, so I can look it back up when I’ve forgot and return in the future!)
Before travelling, we planned our route to Walibi Holland using the “NS Reisplanner Xtra” mobile app, which is the official travel app for the Dutch Railways. It also gave train prices so we had an idea on how much it was all going to cost.
The website
https://9292.nl/ is also very useful planning tool and gives the same results.
In Amsterdam we purchased an “Anonymous OV-chipkaart” for €7.50 and loaded it with enough credit to cover our full trip. You can claim back any leftover credit at the end of your trip from a manned ticket desk.
You can easily take a train from Amsterdam Central or Amsterdam Schiphol Airport to Harderwijk with usually a change of train at either Amersfoort or Utrecht.
Once you have arrived at Harderwijk, it is a short walk to Bus Stop G where you can take the No. 247 Bus to Walibi Holland. On which you can also pay using your OV-chipkaart.
Prices and a PDF of the timetable for the No. 247 Bus can be found at the below website.
https://www.smittravel.com/walibi-express
We actually stayed two nights in Harderwijk and would highly recommend staying in one of the hotels on the shoreline a 15 min walk from the train station.