Integrity and professionalism bordering on zero.
Absolutely not. You are considering she's there as a journalist to produce and informative piece of news. She's there as a writer to produce a feature about how does it feel to be in one of these cruises.
By your standards, all gonzo journalism or, for that matter, any piece of new journalism is unprofessional. That is just plain absurd. The reader knows she is writing from a personal point of view and should be capable to understand what that means in the context of the experience.