Cultural Embrace did a wonderful job answering all of my questions before and during my stay in Spain. I knew what to expect and how to use my free time to really take advantage of living in another culture.
I really wanted to learn the language and as anyone being immersed for the first time will tell you, adjusting at the beginning is difficult but completely worth it. You must go out of your comfort zone to learn as much as you can about the other culture, making sure you approach every new experience with an open mind. Go join a local gym and take exercise classes or go to a festival advertised on a poster.
As a native english speaking au pair, my main objective was to teach the children English. I played games and encouraged them to speak each afternoon after school and on Saturdays. During my free time, I taught some private English lessons, went to the local gym, had an intercambio, or met another au pair friend for coffee.
This truly changed my life and vacationing somewhere will never replace actually living in an area for an extended period of time. You can form relationships with those around you and be immersed in not only the language but an entirely new culture.
I highly recommend traveling as an au pair because you can be a part of the family life of another culture while having the free time to see so much more.