There are some things that passengers do on planes that really annoy other passengers or even the flight crew. And it may differ depending on how long the certain flight is. Sometimes on a long flight you might need to just stand up to stretch or move because you have been seated for so long. And speaking of talking - it's fine to say hi to your seatmate, but don't try and have long conversations with other passengers that you don't know. There should be at least one perkIf you are flying somewhere - have a safe flight and bottom line is just to be considerate of others when flying.