According to an old news article about Victory Cruises, La Cruise Casino was the first casino cruise ship to sail out of Mayport, FL, followed by Sun Cruise and Jacks or Better before Victory which was the fourth.

Here's a link to the news article on Vcitory
https://www.news4jax.com/entertainment/2014/05/30/new-casino-cruise-to-sail-out-of-mayport/

Plus another article on the ship
https://www.upi.com/Odd_News/2002/10/29/Vegas-Guy-La-Cruise-Casino/41051035912120/

And here's a website that has details on the La Cruise
http://miamibeach411.com/cruiseguide/la-cruise-casino.htm

There's a lot of other articles so it was definitely a casino cruise ship.

Hope that helps
Bob