June to August in Europe is known as High Season (which means you can expect wonderful summer weather but the downside is quite a few crowds). Any destination in Europe will be a great destination during high season.
If you really put your mind to it, and constantly expose yourself to a language then you may find that you can speak it with relative ease within about 6 months, although as mentioned before, you would really need to be living in a country that speaks that language in order to get to this stage.
Since colleges only require about two years of a foreign language, the result of many students deciding not to continue this education is problematic. Learning a foreign language beginning at the age of 14 for only one or two years will not do much. I completely agree with your idea of implementing foreign languages earlier in school. To me this does not only seem beneficial, but a necessity.