Is Castilian (Spanish) spoken in Barcelona, apart from Catalan?

Question

if so, where are the most common places to go where Spanish is spoken more? I just don't want to bump into too many people that speak Catalan because then I won't be able to speak very well. Thanks

Answer 1

Yes.  Even if you go to a restaurant, you will often be offered your choice of a menu in Castillian or in Catalan.

Answer 2

Yes, castillian is spoken everywhere in Barcelona and Catalonia main cities. Catalan people are bilingual (Castillian-Catalan). All people understand Spanish, even if someone refuse to speak it (unusual if they look you don't understand catalan)