The most coveted restaurant reservations in 7 big US cities

Courtesy of MILA Miami

• It's never been more difficult to get reservations at some of America's hottest restaurants.
• Some power brokers broadcast where they're eating on social media as a badge of honor.
• Travel agents and senior hotel staffers shared the buzziest restaurants in seven major US cities.

Remember when the hottest spot in town was a club with a line wrapped around the street corner or a swanky...