tattoos at conventions

I'm going to the SLC convention and I'd like to get some work while I'm there. How does one go about getting a tattoo at a convention?

I would check out the artists from the website and then call them to see if they have time to tattoo you that weekend. Gonna be some great folks there, Matthew Amey, Dave Fox, Lisa Schmoldt, Jack Rudy, Big Gus(one of my favorites), Rodney Raines, Tony Olivias, and many others are worth checking out... What type of tattoo?