Brad Pitt and Angelina Jolie enjoyed a romantic pre-Christmas vacation in Vietnam.

Brad Pitt and Angelina Jolie

Brad Pitt and Angelina Jolie

The couple have spent most of the past few months in Cambodia where Angelina is shooting 'First They Killed My Father: A Daughter of Cambodia', about the brutal Khmer Rouge regime but managed to get away for a few days together.

There was no sign of their six children, Maddox, 14, Pax, 11, Zahara, 10, Shiloh, nine, and seven-year-old twins Knox and Vivienne, as Brad, 51, and Angelina, 40, spent three days in the country.

They visited Halong Bay, enjoying a private boat ride before kayaking into caves and then visited Hanoi, where they stayed at the luxurious Metropole hotel.

A source told PEOPLE: "They looked happy. [They were] holding hands, laughing."

While Brad and Angelina didn't bring their children on the brief getaway, they rarely travel without their family and recently admitted they fly their children's friends over to them when they're working away from home.

Brad said: "Our life is their normal. Because we're migratory workers in a sense they have this wonderful thing where they get to be students of the world.

"They have memories of being in Vietnam, or that time in Paris, or over in Calgary. The downside is friends, sleepovers, team sports - these have been the challenges that we've had to work out.

"We do those things but we really have to go out of our way. And mom is a matador about it all - she's fantastic. We get their friends to us a lot.

"And then when we set up in one place for any length of time I get on the team sports, because I really want them to have that understanding of being on the team."