No, but I'd love to watch a demo conducted by those who know what they're doing! Though I'm like 99% vanilla these days, I am intrigued by some of it, and would enjoy a voyeuristic standpoint.
My only exposure to fire play long ago was some hot wax (not the recipient) and a couple of other dumb things that weren't safe but sounded fun to us at the time (cigarettes held close to the skin etc...). We were young and dumb just exploring boundaries and trust, and found out the hard way that not all waxes melt at the same temperatures!! It turns out fire is hot apparently