Pretty unorganised imo.
The lot my group actually paid for was full so we couldn't get in. That area was pretty close to the main stage too.
Then Campus Misericoridae was a complete dump, with uneven ground. I was chatting with a bunch of cute volunteers and then this nerd walks up and complains that the ground is uneven and he spilled his food into a ditch, wanting a refund. He was promptly told to take it up to the Pope. While his complaints and response was ridiculous, one at least expects the WYD organisation to at least give campers flat ground to park on.
As for the "pilgrimage," a lot of people coming from and back to Krakow got screwed over, because that was the way the Pope would go. It meant that roads were blocked off much earlier than expected and the intended tram stop for pilgrims was blocked off. This meant walking an extra 7km each way on top of the expected 10km. That was not fun carry camping gear that extra distance in the midday sun. Call me a feeble wimp but that's not what we signed up for.
Despite all that, Krakow itself was cool. Nowhere in Australia do I want to just buy a drink and chill out, soaking up the atmosphere.