The language maps in this series are great to carry along during the trip. They're portable, inexpensive, and contain pretty much anything a traveler might need to communicate. They were great last time I was in France and Germany. I've got them for myself and my daughter. Click on the maps to take you to Amazon where you can buy them.
I've also been using this app to re-acquaint myself with German. I used Duolingo two years ago, and it was fine, but I like Babbel so much better.
Try it out!