I was invited to speak at Game Developers Conference in San Francisco, so I travelled domestically 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 7 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 for profit event.