Wait Your Turn For Drinks
Another thing that flight attendants cannot stand is when people are trying to get a drink when it is not their turn. Most of the time, when people are impatient, the flight attendant will be sure to make you the last person that they end up serving.
Flight attendants are not in the mood for someone that has no patience as they are already dealing with a stressful situation. It is best to wait your turn and ask for your drink and snacks politely.