PartyLines- photographs by Patrick McMullan

Are you compatible traveling companions? “We’ve got it down.” So who’s in charge of what? “Oh, I plan. I’m a big planner. And then there tends to be a moment when I have a full-blown toddler meltdown, and Ron finds some string cheese, and then off we go.” —RON LIVINGSTON AND ROSEMARIE DEWITT

—CHRISTY TURLINGTON

Are you a good traveling companion? “I’m a very good travel companion, because I don’t talk too much and I always bring the best snacks.” —OLIVIA WILDE

—IMAN

What’s that you’re drinking? “Tequila. I had a shot of tequila; I love tequila. It’s the only thing I can drink that doesn’t put me to sleep.” —SUSAN SARANDON

—LANG LANG

When I think about travel, I think about Mars. Do you think we’re going to get there? “Yes, we will. Whether we’ll get back is another matter, but we’ll definitely be able to take people on a one-way trip to Mars in our lifetime.” —SIR RICHARD BRANSON

—CHRIS MATTHEWS

What’s your travel style? “Light and nimble.” —ADRIAN GRENIER

—NICHOLAS KRISTOF (Dimitrios Kambouris/Getty Images)

Are you a do-gooder? “Yeah, I think I am. I don’t know. It’s for other people to say. When people call themselves philanthropists, I always feel like going, ‘That’s for other people to say, doll.’” —SARAH SILVERMAN

—SOMALY MAM