Just leave it in the primary while you're on your trip. There is no reason to secondary a dubbel unless you're adding some sort of weird adjunct to it. As the previous poster said, it will benefit the beer to just sit on the yeast cake a little bit longer. No worries mang.
Beer so good, it's frightening.
2014: Seven Heavens Series One: Vilon, Mystic Melomel, Skeeter Pee.