I proposed an idea to speak at SpringOne 2GX in Washington DC, so I travelled internationally to speak. The event gave me a free ticket. My travel and accommodation was fully covered by the event. My employer did not pay my travel expenses, and I used my PTO to speak. It took me 10 days to prepare for my 90 minutes speaking slot, and I had a great time. I'm a man who has been speaking for 3 years. This was a for profit event.