I am reading about the blue man group. It says that it is located between hard rock cafe and main entrance to universal. Is it located in the building where they used to do nickoledon (sp?), like where the green gunk would come out. I am trying to place exactly where it is. Also we are undecided if we want to go. we are planning to make decision on day we visit. where can you buy the ticketson the day of the show, only at the place where the show is?