The Rosario Island excursion for Cartagena was nice, but not worth 140.00. They take you on a long boat ride, show you and open Oceanarium( Interesting), then take you to a very modest resort, where you have to pay if you want to snorkel. Drinks are limited and expensive. The lunch is VERY authentic, and i don't recommend the fish. They are even chincy with the drinks for lunch.
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Norwegian Cruise Line