The Al Mourjan Business Lounge in the north terminal expansion of Doha’s Hamad International Airport boasts excellent amenities including a gym, as well as amazing views of the orchard garden. The experience is topped off by the Diptyque range of toiletries available in the facilities. Website

The lounge leader has tightened so many rules over the past few years, there’s a laminated cheat sheet at the check-in counter.

Airport lounge privileges are becoming more exclusive. Inside the room: Swanky airport lounges have become so overcrowded that managers are increasing restrictions to reduce attendance. Delta Air Lines will limit holders of premium American Express cards to 10 or 15 visits annually to Delta Sky Club,