In terms of food and facilities, Royal Caribbean is probably better.

First: It is large enough to claim to be the largest ship in the world. The largest ships in Asia are all from Royal Caribbean Cruises.

Second: many of its recreational facilities are unique.

Such as rock climbing walls, ice skating rinks, 3D cinemas, DreamWorks Animation themed parades, and his Royal Mile, etc.

They are all quite distinctive.

This is something that other cruise ships don’t have, so Royal’s ships are quite entertaining and can keep you entertained for a whole day!

:) Third: The royal ships are large, so their dining venues are also spread out quite a lot and are very unique.

Various flavors of catering will surely allow you to taste your favorite food.

Regarding service: Royal boasts a royal-like service experience, and the service will definitely make you quite satisfied:).

Costa Cruises flaunts its pure Italian style and luxurious decorations that give people a romantic and luxurious feel.

Because the size of the ships of the two companies operating in Shanghai is quite different, Royal is Asia's giant Ocean Mariner.

Therefore, in terms of price, Costa is cheaper than Royal.

Costa's advantage is that it is an international cruise ship that settled in China relatively early, so it has its own uniqueness in serving Chinese guests and catering to the food tastes of some Chinese guests.