Find the gaps in the venue arrangement
Check which existing facilities are included, when they are open and who may use them. An outdoor area can need additional provision even when the property has a permanent restroom building. Ask the venue contact about the proposed equipment position.
Describe the programme as well as attendance
Guest arrival, meal breaks and the end of a performance can create concentrated demand. Mention alcohol or food service when relevant to the planning discussion, without assuming a universal sizing formula. Explain whether visitors stay all day or come and go.
Coordinate equipment with other suppliers
Consider accessible units and washing early, then compare standard cabins, deluxe options or a trailer. Keep setup vehicles and public circulation separate where possible. Confirm arrival and collection windows against catering, staging and venue operations.
If the site changes after booking, update the rental provider and the person responsible for the venue layout. A previous position should not be treated as approved for a different event.