Tip: if you’re going to travel to another country that doesn’t speak the language you speak and don’t have time to learn the language of the country that well, learn two key phrases in the other language.
1) Hi do you speak [insert your language here]?
And
2) Thank you.
Because if they answer no to your first question, it’s nice to thank them for the inconvenience.
Overall, you should try to learn the language as much as possible, but if you’re running short on time then those two are the most important.