call me overly cautious or whatever but I have noticed there are some questionable behavior on air travel or any kind of travel. re: bare feet on plane seats, nose picking then flicking, mouth open coughing, hocking a loogie in the hot tub filter on the side (on princess cruise to alaska, shudder) etc...You really don't. I mean, if you want to, go for it. But "definitely need to" is probably overstating a bit.
To answer the OP's question: no. Enjoy your cruise!
i don't oppose to some bacteria in the system (you need it in fact) but i've learned to just take my extra precautions for any virus when amongst a large group of people. wouldn't make sense to get sick or feel under the weather & have vacation ruined...
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