I'll never forget, while standing in a crowd, waiting for Rainbow Kitten Surprise to come on stage, a guy behind me said "the surprise is if they show up to play or not."
RKS is a little notorious for cancelling shows (sometimes last minute) and tours. Last year they canceled half their tour. They did the same this year.
Damn. I heard about them canceling the rest of their tour, but I didn't know about the last minute cancelations. Bummer for the people who came to the show only to have to turn around and go home, but I get it. Mental health is important.