Would this have generated money? A general survey on vacation planning habits does not provide actionable data to explain the timing of identity document verification.
The link between a general vacation survey and a specific observation on passport verification is too weak to be considered a reliable source of information.
In Switzerland, where every franc invested counts, one would never base a communication campaign or reminder on such a weak correlation.
For example, if an airline had to send reminders for passport verification, it would rely not on indirect data but on a direct question in its booking form or a targeted survey on this specific point.
Without a direct question in the initial survey, there is no concrete added value to this "information".