Describe the programme’s busiest interval
The peak after a performance or during a meal break may matter more than average attendance. Tell us whether guests remain on site or arrive in waves, and which permanent restrooms they may use. This helps frame the capacity discussion without relying on a universal visitor-to-unit formula.
Give supplier access its own timetable
An event setup can involve catering, staging and other deliveries. Identify the window when restroom equipment can enter and where the delivery vehicle should report. Keep the eventual pedestrian route separate from areas occupied by supplier vehicles.
If a trailer is being considered, ask about the exact model’s space and utility requirements. A photograph of the finish does not answer those site questions.
Check the agreed arrangement before opening
Confirm washing, accessible facilities and who will monitor supplies. Share the final layout with the responsible venue contact. Obtain confirmation of the equipment and collection plan; submitting an enquiry alone does not reserve units for the event.