I did something similar when I was at school, and it was very satisfying to be able to get by in a foreign language, even if it did take a lot of asking people to repeat themselves to get directions, etc.
These days I always try to learn the basics (numbers, dates, directions and simple phrases such as 'how much does this cost please') - I might not be able to hold a full conversation, but it seems people really appreciate it if you at least make some effort to talk in the local tongue.