They hate it when you order Diet Coke
Okay, we’re starting off with a really weird one. Why on earth, you might be thinking, would a passenger ordering a Diet Coke pose a problem for a flight attendant. Well, it’s the least popular drink for passengers to order because it is so highly-carbonated. Because of this, while pouring the drink, it takes a long time to settle so that you can top up the glass. This is particularly true when the plane is cruising at 35,000 feet. According to our flight attendant sources, pouring a Diet Coke for a passenger takes roughly three times as long as pouring any other drink. You have to pay such close attention to the drink to ensure that it doesn’t overflow. Who knew?!