I started Wikivoyage with some other guys in 2006 and was chairman of the Wikivoyage association for some years. In 2012 the assosciationhanded the project over to the Wikimedia foundation. I often work on modules and created modules an templates which uses Wikidata on our project.
Every article in Wikivoyage uses Wikidata - not only in Infoboxes. Complexity and quality of data and missing constraints can cause problems. This is a report about our experiences.