With the technology we have now, there are a lot of ways around this. There are different applications like Duolingo, Babble, Memrise, etc.... You can also pick a up a phrase book of the country's language so that you can get those key survival phrases. If all else fails, you can always ask if somebody speaks English! It seems like most of the world has some form of education where English is a requirement, so don't be afraid to ask that question.