A delay might set back passengers' plans to get to the beach by a few hours, but it's far worse for flight attendants. For cabin crew, a delay means missing out on valuable sleep time before their next shift.

"We hate delays just as much as you do, if not more," the same flight attendant said.

The user said, giving an example of a delay:

If I was going to originally have 10 hours of rest at the hotel before having to fly the next morning, now it is 8 hours. This 8 hours includes having a meal, showering, getting ready for bed, getting ready in the morning and travel time to the airport.

Consider this on your next early-morning flight, and maybe throw in a "please" and "thank you" to the exhausted flight attendant handing you a drink.