When I traveled in Czechia, Slovakia and Poland I had a vocabulary of West Slavic words that was almost 100 strong, on a good day. I had no knowledge of grammar or tense, just stringing 3 or 4 words into a sentence that made sense only to me. And the people in those countries would listen, try to figure out what I was asking and answer me in English or in a very slow version of their native language, fit for the foreigner. And quite frequently, they would stay for a minute to help me "polish" my phrasing a bit. Great memories of the Czech Republic, in Plzen and Prague mostly. Great beer and food, but the people were the best!
That was a solo train trip, with a few coach legs too. And traveling solo meant that I had to come out of my shell which was a very good thing. I find the same thing happens even here in the States when I travel solo. I talk more and meet more people.