Forgive me if I misread you, but I would think that Ticketmaster would hate bitcoin - an open financial transaction network. My take on Ticketmaster is that they unashamedly work to maintain a monopoly to charge highly profitable fees on every transaction.
I meant that Bitcoin would make ticketmaster not needed. Ticketmaster ia basically a monopoly when it comes to ticket sales. Bitcoin would let venues go around ticketmaster and cut out a very expensive middleman in the ticket buying process.
Burning Man is a big money making business controlled by Black Rock City LLC. Why don't you contact them and see of they would be interested in direct sales for Bitcoin. The way the Org covers up all the deaths, rapes and accidents at BM every year I'm sure they are all about profit. Just tell them a way they can increase their profit and it should be easy to sell them on it.