Before & afterCheck the practical arrangements with building management
If entry involves reception or a managed door, confirm the appointment arrangements before the day. Ask whether the relevant space can be opened rather than assuming a general visitor pass is enough. You should also receive the treatment preparation directly, so building access and readiness inside the room are both covered.
Homes & workplacesResidents and managers provide different information
An occupier can describe the timing and location of sightings, while a premises manager may know who controls another area. Both can be useful for an Olympic Park enquiry. For commercial work, also explain how the affected room operates so the appointment can account for staff, stock and authorised access.