LOL, I have seen them come into clubs on Walking Street before official opening time and not leaving before they got an envelope.
Once the owner wasnt there so the club had to open an hour late before he could get there.
What was in the envelope, I dont know. Maybe dating advise or food recipes ????
Weirdly enough, they always knew 1 day or 2 ahead of raids so their non-visa employees could take the night off.