I used to live in Miami so I know how huge Ultra is down here. The local Universities are deserted during Ultra week and no one showed up to class on Monday, events like this are BIG. Now keep in mind these shirts aren't just for Ultra Music Fest, but all events that could be used as opportunities to promote Ultracoin in general, there are plenty of events in South Florida where people come from all around the world, representing all walks of life, not just young, but old, tech savvy and old fashioned. Obviously the younger generation is much more technically inclined then the older generations, these are the people that are using and adopting currencies like Bitcoin for the first time. Although libertarian minded folks and others will be more than interested in the prospect of Ultracoin no matter what their age. These shirts could be used as a marketing tool that could be a template for anyone that wants to print the design and go to a local event and sell/give away the shirts to promote the coin. As far as the shirts go, the shirt itself could be modified for each event or cut a certain way to make it more appealing to the crowd, it all depends on what the winning design is.