I proposed an idea to speak at Lucene Revolution in Dublin, so I travelled internationally to speak. The event gave me a free ticket, and I was not paid to speak. The event assisted with part of my travel and accommodation. My employer paid some of my travel expenses, and I used my PTO to speak. It took me 4 days to prepare for my 50 minutes speaking slot, and I had a mostly good time. I'm a man who has been speaking for 7 years. This was a not for profit event.