Why a PDF by email starts an endless chain
Because a PDF is not edited: it is replaced. Every change the client asks for — moving two cousins to another table, fitting in an aunt who confirmed late — means redrawing the plan, exporting it and sending it again. And because the previous email is still sitting in the client’s inbox, by the third round there are three plans in circulation and the one the bride’s mother opens is not the one the venue is working from.
The cost is not the time spent exporting. It is that on the day of the set-up somebody is working from a version that is not the latest one, and that does not get discovered until it gets discovered.
What the client can touch and what they cannot
The answer that works in almost every case: guests yes, tables no. Seating their own people is exactly what the client wants to do and what they are best at — they know the families, they know who cannot sit with whom. Moving tables, on the other hand, changes the capacity, the service gangways and the escape routes, and those are decisions the venue answers for.
There is one reasonable exception: an experienced wedding planner who works with the room regularly. Opening up the plan there can save a round trip, as long as it is clear that the final set-up is signed off by the venue.
When to send the link
Not before the list is reasonably closed. Sending it three months ahead looks generous and turns out expensive: the client seats everybody, fifteen new confirmations arrive afterwards and it all has to be redone — except that by then they have grown attached to a particular layout.
The moment that works is six to eight weeks out, when the replies are in and there is still room for changes. And it is worth sending it with a sentence that says what is expected: seat the people, do not redesign the room.
How it closes: the version that gets built
With a date and a warning. A few days before the event the set-up is locked and the link stops accepting changes; from then on, anything that arrives is noted by hand and applied by the venue if there is time.
That cut-off is what lets you print the set-up paperwork knowing it will not be out of date between the printer and the pantry. Without it, there is always a last-minute change and nobody knows whether it made it in.
The day before: what gets printed and who signs it
Two documents: the plan to pin up in the pantry, and the set-up sheet with every table and who sits in every chair. Both with the print date and time visible, which is what tells the current one apart from the three-day-old copy somebody left on the side.
And a signature, however informal: whoever is setting up confirms they have received that version. It is not bureaucracy, it is the line between «nobody told me» and «it changed after printing».