While it is helpful to know some basic Spanish phrases, if you do not speak the language, it should not be a barrier to communicating with the locals in San Jose. Many people, especially those in the hospitality industry, speak English and are used to helping tourists. It is also common to use hand gestures and body language to get your message across. Don't be afraid to ask for help or clarification when needed, and consider using translation apps on your phone. Above all, meet the locals with respect and a friendly attitude, and you're sure to have a positive experience.