Millennials dominate Carnival Cruise Line's guest demographics. A look at its new Carnival Firenze could explain why.

The cruise has been hinting at a major overhaul of its loyalty program, which offers fewer perks than most other cruise line programs.

But Hart's latest and most personal creation is We Culture, an 8,000-square-foot Carnival museum in Maho Bay, St. Maarten.

While the ship is crossing the Gulf of Mexico, Carnival Jubilee is not expected to be impacted by Hurricane Rafael.