What is the best, cheapest, quickest, most reliable (and safe!) way of getting there? Advice would be most appreciated.
Id be inclined to travel the day before and grab a cheap hotel, not sure if there are any near Katowice Airport as that is way outside the city on the North side. Its a good 30 minutes + drive from the A4.
Maybe train to Katowice then a bus to the airport.
Actually there is a shuttle service from Katowice (airport) to Krakow (Balice) it enables them to advertise Katowice as a krakow airport surely there must be a way to return on this shuttle.
Perhaps some kind of service from Krakow center.