Depending on the level of the cruise ship used for the shipping contracts, the cost will be higher and the amount of goods will also increase. The ship's return time will remain the same. The benefit is getting more goods for less energy used to unload the ship. These boats offer multiple boats in one, to assist limited space issues. Although this acts as multiple boats, this will only count as one ship when used during any goals. They only exist on a Jumbo Cruise Port.
Note: Although it states ingame that 1 Jumbo Cruise Ship equals x Cruise Ships, the actual stats used are that of the Little Liner multiplied accordingly for each level. Also, the numbers shown for each Cruise Ship is incorrect.
Tourists are customers for your businesses, hotels, and attractions that are unloaded from your cruise ships. Having these tourists in your city will speed up how quickly the businesses in your city sell out after you supply them. This is the same effect housing has on your businesses, except tourists spend 2x more than residents. Before unloading the tourist passengers from the docked cruise ship, make sure the businesses in your city are resupplied with purchasable goods (not sold out or empty). This ensures they have places to go shopping.