This is the biggest mistake you can make on a cruise

Did you forget something? You may pay a high price for making this cruise blunder

Illustration by Dustin Elliott

Booking airline tickets for your next cruise may seem like a no-brainer, but please don't make the mistake of turning off your brain. You could have to pay for a new flight — or even get stranded at the port.

Just ask Beverly Rasmussen, who booked her airfare through the EZAir program offered by Princess Cruises because it offered the "reassurance that i…