"Use rear entrance."
"Loading bay behind Unit 4."
"Sat nav finishes 120 metres early."
"House numbers begin at opposite end."
"Buzzer 24B, not 24."
"Trade counter, not showroom."
"Height barrier 2.1m — vans only past Gate C."
"Reception closes 17:00 sharp."
One line, under 100 characters, at the end of the job.
Auto-tagged: entrance, parking, loading, access, sat nav.
Next driver confirms, updates or rejects the observation.
Merged into the Arrival Passport for that address.