I am just guessing but perhaps it costs more money to play at the Chicago venues? Or maybe Mojoes treats the artists really well there or something, I dont know just guessing.
anyways, I feel like this is foreshadowing bad news in the future for this band. Especially considering the new music that Nick put out, and the fact that Colin did not enjoy the tour life or whatever, but is now playing with them again. Might have to take a stance against this tour