My instinct tells me that this connection between a survey and actual behavior is a bit far-fetched; a simple Google Forms survey does not capture the complexity of administrative deadlines and the last-minute pressure.
The fact that people answer questions about their holidays does not prove that they check their identity documents in advance; in Spain, the cita previa system pushes people to plan ahead out of necessity, not always by choice.
This feeling would only be quantified if survey responses were cross-checked with real data, such as tracking passport renewals before trips.
There needs to be tangible proof of the link, not just a declared intention in a questionnaire.