Count the people present together
An overall visitor total can hide short periods of much heavier use. Explain arrivals, shared breaks and overlapping sessions, or the shifts of a working crew.
Include organisers and support staff who remain outside public hours. If the count is provisional, identify the estimate clearly and discuss when it can be refined.
Account for facilities the group can actually use
List permanent toilets and the hours they are accessible to the relevant users. Nearby facilities should not be included merely because they exist; the operator must permit that use.
Discuss wider-entry units and washing separately from the total number of standard cabins. The equipment mix needs to reflect the people and activity rather than a single undifferentiated count.
Review quantity alongside servicing
Ask how the expected use affects the proposed service arrangement. A longer or more concentrated activity may need a different discussion from a brief, evenly spread gathering.
For Altamonte Springs enquiries, this guide deliberately avoids a universal people-per-unit formula. Revisit the proposal if attendance, occupied hours or access to permanent restrooms changes before the rental.