"All ships experience some challenges, " said Wetty, who traditionally books her customers on high-end cruises.
CNN: Will Carnival keep its customers?
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Customers need to be reassured Carnival is doing everything it can to address its ships' issues, Wetty said.
CNN: Will Carnival keep its customers?
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Before you board, make a copy of your passport and have a bag with necessities like hard-to-replace medication, said Kimberly Wilson Wetty, head of the Valerie Wilson Travel's cruise department.