What behavior is and isn’t acceptable on an airplane? A YouGov survey of more than 1,100 U.S. adults sought to determine the answer. Surprisingly, taking off your shoes isn’t close to the biggest no-no. Here are some of the worst in-flight behaviors.  Reporter: Jacob Passy Graphics/Producer: Siemond Chan  Images: iStock #travel #airplanes #travelnightmares #wsj #thewallstreetjournal #wallstreetjournal