Catalan or Spanish in Barcelona?

I live in Terrassa, Catalunya, and I was born in Barcelona.

While the political situation might be "tense" I would not worry about it. For those who don't know what's going on, next Sunday a "participation process" is likely to ask catalans whether they want independence from Spain. Spain wants to block this process after blocking attempts for a referendum and a poll.

You can use both Spanish and Catalan. Being a tourist, in general any local language will be appreciated, and even you will surprise locals in a good way if you can communicate in Catalan. In Barcelona downtown usage of English shouldn't be a problem, but keep in mind that local residents are starting to worry about the cons of mass tourism and some refuse to help tourists.

I'm a regular visitor to Catalonia and have learned Catalan, but I can say that from my dealings with Catalan people (apart from the mass-tourism areas) they are friendly and tolerant and very happy to hear a foreigner making an effort, but if they see you are having trouble with the language they will automatically switch to Spanish, or English if they can. They certainly won't be offended if you talk to them in Spanish.

I am Catalan. You can speak in Spanish or Catalan. No one will feel offended for it. We all speak both languages, and the fact that you are a foreigner will for sure easy out your attempts in any language. As for sympathy certainly trying to speak in Catalan will do the trick. We are not castilian, and do not let people mislead you into think is the same Castilian than Catalan. We are very proud of our roots, and we are offended if they are confused or brought down.

For years we had a house in Catalunia. Nobody took insult in being addressed in English with some attempts at Spanish.
While further south than Barcelona, I seriously doubt the situation there is any different.

Just expect a lot of especially local political entities and companies to advertise in Catalan, so being able to read a few words of it (and it's not that hard to figure out if you know a bit of Spanish at that level) can be handy at times. But certainly not required.

It's not like Brussels or Liege where you may receive hostility or bad service in restaurants and shops if you're overheard speaking Dutch (and yes, I've had that happen there).

As @JoErNanO said, I would learn both if possible. However, if your goal is to learn only few basic words like "thank you", "hello" and "goodbye", I would learn them in Catalan, since that shows that you learned them specially for that trip and people will be more thankful. That is specially true if you do a single day trip to a town or smaller city near Barcelona some day, since Catalan usage is usually greater in small towns.

In the other hand, if you want to learn a language in a deeper level, I would recommend you Spanish because it's more useful: it's spoken in South America, Spain and even in Catalonia there is more people who speak Spanish than Catalan.

About the "tense" situation, I would say it's not more tense in Barcelona than in any other democratic country before elections. There are people with different opinions about one topic (I suppose you're talking about the independence issue) but it doesn't translate in any kind of tension on the streets.

If you are interested in learning more about that, I would recommend you the articles on Wikipedia about languages in Catalonia and Catalan independence movement:

• http://en.wikipedia.org/wiki/Languages_of_Catalonia

• http://en.wikipedia.org/wiki/Catalan_independence

There are only some 7 million native Catalan speakers whereas Spanish is ranked second after Mandarin in number of native speakers 470 millions. Investment in learning some Castilian is not only more likely to yield a better long-term return (through application outside Barcelona) but is much more likely to be understood by a native Catalan speaker than vice versa.

An advantage of learning Castilian rather than Catalan was brought home to me when I visited Port Lligat where I met two printers from Barcelona, who were native Catalan speakers. Their Castilian had been learned in school and clearly not much exercised since. I guess it slowed them down slightly and simplified their vocabulary when conversing with me and the social interaction between us was far more than it would have been in either of our mother tongues.

It's not mandatory to know any of them but the only problem is that most of spanish people don't know english, so it's good to have some basics of spanish (castellano). Good luck :)

I was last in Catalonia shortly after Franco's death, and at that time, people were frankly so stunned to hear an American (USA, that is) tourist conversant in Spanish I can't imagine what would have happened if I tried Catalan. I learned "please" and "thank you", for fun. Of course, this was back when only a handful of signs had become bilingual, much less monolingual in Catalan.