Wikipedia
AquaPalooza
AquaPalooza is a multi-location boating festival sponsored by Sea Ray boats. It is promoted as "The World's Largest Boat Party" and claims to attract over 12,000 boats to 100 locations mostly around the United States, but also in several international locations.
The "Signature Event" was held on Lake Travis in July 2010 and attracted approximately 7,000 boats and 65,000 people.