The applicable one-way reference starts from RMB 1,800 / HKD 2,090 per vehicle, not per person. Pickup 00:00–06:59 adds RMB 100. Exact districts, extra stops, waiting and parking must be itemised in the written total before payment.
Usually 3–4.5 hours after pickup. This is the road-and-border time from the agreed Guangzhou city pickup, not from the end of a meeting. Hotel luggage collection and additional stops need their own time. For an HKG departure, add airport procedures separately and plan backwards from the airline deadline.
Organise the post-fair meeting and return. For common inspection rules, see what happens to passengers at the border.
Send the Guangzhou hotel, venue or office vehicle entrance, the time everyone can leave, passenger and luggage totals and the exact Hong Kong drop-off. List hotel luggage collection or other stops in order. CAN airport pickup is a separate route; include its flight and terminal if that is the actual starting point.