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Freshen up

"The one thing I didn't think I would ever see in my lifetime is a shower on the airplane," said Rick Seaney, CEO of FareCompare.com.

In 2008, Emirates began offering first-class passengers on its A380s the opportunity to shower midflight, in a Shower Spa tended by a dedicated attendant. (It's still the only carrier with the service.)

The catch: Showers require an appointment and are limited to five minutes.

Source: Emirates Airlines