Interesting... what is exact this cruise ship? maybe other people can go and listen too 
Why don't you spend five minutes doing some research on this? If you clicked the link above you would find all you need to know about it. It's basically like bitcoin conference but instead of renting out a venue you rent out a cruise ship and it sails around a few places.
You can buy tickets for it here: https://coinsbank.com/cruise-europe?#section-home
Quote
On Friday September 7, Coinsbank’s Blockchain Cruise will depart from Barcelona with 2,500 cryptocurrency enthusiasts on board. Among those present will be a number of the industry’s leading figures including such mavericks as John McAfee and Brock Pierce. On September 10, the cruise liner will dock in Ibiza, where one for sure highlight of the trip is scheduled to take place.
At 1pm, Roger Ver and Jimmy Song will face one another in a debate that has been framed as Cash vs Core. Bitcoin.com CEO Roger Ver is a passionate advocate of Bitcoin Cash and its low fees, on-chain scaling, and focus on real world adoption. Jimmy Song, on the other hand, is a proud Bitcoin Core evangelist. Through his writing and development work, he has been a tireless source of support for all things Bitcoin. Both men were preaching the gospel of Bitcoin before it was cool, and remain staunch proponents to this day.
At 1pm, Roger Ver and Jimmy Song will face one another in a debate that has been framed as Cash vs Core. Bitcoin.com CEO Roger Ver is a passionate advocate of Bitcoin Cash and its low fees, on-chain scaling, and focus on real world adoption. Jimmy Song, on the other hand, is a proud Bitcoin Core evangelist. Through his writing and development work, he has been a tireless source of support for all things Bitcoin. Both men were preaching the gospel of Bitcoin before it was cool, and remain staunch proponents to this day.
