In Ciudad Vieja, Spanish is the working language across markets, tuk-tuks, and family-run comedores; a few Kaqchikel speakers live in surrounding aldeas, but Spanish suffices for nearly all visitor interactions. Pronunciation follows Guatemalan highlands Spanish, with clear enunciation and standard 'tú' forms common in town.
Because Ciudad Vieja is smaller and less touristy than neighboring Antigua Guatemala, English is rare outside top-end hotels. A handful of warm greetings, polite phrases, and food terms go a long way at the family comedores around the Parque Central and the produce stalls near the ruins of the second capital.