How do your characters get away from it all? What drives the need for them to do so? How successful or otherwise are they at this? Does whatever is "bugging" them catch them up and overwhelm them or does the break away give them the respite needed to find a solution to their problems?
How often can your characters get away from it all? Are regular mini breaks enough or do they have to get right away for a week or more? How easy, or otherwise, is it for them to do this and what obstacles might get in their way? Some good stories to be found in answering those questions I think!
Have a wonderful writing year in 2018. I plan to!