I was invited to be on a panel at EdgeConf in London, so I travelled internationally to speak. The event gave me a free ticket, and I was not paid to speak. The event did not pay for my travel and accommodation. My employer paid all of my travel expenses, and I used my PTO to speak. It took me 3 days to prepare for my 45 minutes speaking slot, and I had a great time. I'm a man who has been speaking for 1 year. This was a not for profit event.