I took two years of Spanish in high school. A few years ago, we had our roof replaced. The first day four guys came out; only the foreman could speak any (very little) English. The next day, two of the non-English speakers came out to finish the job.
I noticed that the other two were missing, and, remembering my H.S. Spanish asked one of them, "Donde estan los otros? (Where are the others?)
He smiled and proceeded to explain to me, in words I didn't understand, where the other were.
I realized that understanding only a bit of a language can just get you in more trouble.
If you won't take the time to really learn the language, don't expect to be able to communicate. Yes, learn the formalities, but stay in the heavily travel tourist places, where people are hired for their ability to speak English.
BTW, according to the results of surveys published on the E.U. website, only about half of all E.U. citizens, and about 1/3 of French, can communicate in English.