If you plan on visiting Buenos Aires, even if it is for a short time, I would recommend brushing up on your Spanish. Josh and I have done a fair amount of international travel, and there are many places you’ll find there are lots of English speaking people, even if English isn’t the official language. I don’t know that I would describe Buenos Aires as one of those places. We did meet some people who spoke both languages, but I would say for the most part, it was Spanish. We did okay, but there were also some lost-in-translation moments. A free app we like that can help in language preparation before a trip is DuoLingo.
I think it is always good to attempt to communicate in someone’s own language as much as possible, even though I feel like I’m horrible at it! I think speaking multiple languages is like a super power! I hate it when someone whose native language is not English gets embarrassed or feels bad (or is made to feel bad) about not speaking English very well. I always want to remind them – I speak one language; just one, that’s it. You are my hero. Your English is beautiful; Your native language is beautiful.