If you want to learn how to make a production in Logic Pro, it’s highly recommended that you bring a Macbook with Logic Pro and a headphone.
If you mainly want to make a creative, musical contribution and are less interested in the technical aspect of music production, it’s not necessary to bring a Macbook with Logic Pro, but you might bring a musical instrument that you can play.
In order to make field recordings, it’s recommended that you either have a smartphone which is able to record audio (pretty much any smartphone can do that) or a dedicated fieldrecorder.
The most important factor is that you have a passion for chill-out / ambient music. That unites us during this Experience.
Sound University Europe will provide some MIDI-keyboards for students to use during the Experience.