Guide visitors in the language of their choice

I have the visitor guide for the heritage trail in English and Spanish. Send the Spanish version to Luis in Visitor Services and then to Ana, our volunteer coordinator, for approval by Thursday. Check that each trail sign text matches the audio script, that the translations use the established terminology for 'guided walk' and 'leave no trace', and that the pronunciation notes for volunteers are included.

Before we publish language options, make this easy for a front-desk volunteer to use. Put the welcome and safety notices at the top in each language, make the map captions obvious to point at, flag any phrasing that could confuse non-native speakers (dates, times, directions), and suggest two brief lines volunteers can say to offer assistance in each language.

A Dutch family asked for a guide and we only have an audio script in English and a brochure in Spanish. The visitor asked me personally and waits at reception; my volunteer is not confident in Dutch. I can’t invent an official translation on the spot and I don’t want to sound dismissive. What is the likely expectation I failed to meet, the best two-sentence reply to the family that keeps them engaged, and one immediate practical offer that will buy us time to arrange a proper-language guide?

Over the season we repeatedly lose bookings from non-English speakers because our language options are inconsistent across signage, audio, and staff. I want a single small change that reduces complaints and improves bookings. Which habit should I change in how we publish language materials, what one concrete deliverable will cover most demand, and how to check after one season whether complaints drop?