I live in Olen, about half an hour drive to Genk, so if you guys have any questions, just ask.
Getting a ticket in the away section will be impossible for me, but I'm trying to get one in the home section for me and me dad.
The airports close by Genk are Maastricht, Liege, Eindhoven, Brussels and Antwerp
Trains run from around 6AM - 11PM - if you need to get to Brussels Airport by train you'll need to change trains in Hasselt.
Taxis should be OK from Hasselt, Diepenbeek, Maasmechelen, Maastricht to Genk.