Knowing MK and his strong character, I'd doubt it's a contract thing.
Maybe the Croc "talked his way" into that, but it is still very strange. Moreover, if you look at the sales rate it seems also as a not optimized tour.
Sure, there will be many sold out venues, but also quite a few empty sections.
The most important thing is that there is a tour, I hope health and well being will not be affected (nor the quality and fun of the performance)