Eighteen months, backwards

Every planning timeline you will find online is written forwards, in months, with the reassuring flatness of a calendar. Book the venue. Choose the flowers. Send the invitations.

Real planning does not work like that, because the items are not independent. Almost every decision is blocked by another one, and the useful question is never “what should we be doing in month seven” — it is what has to already be true before this next thing can happen at all.

Dependencies, not dates

Four examples of the chain, because they are the four that catch people out:

• Invitations cannot go out before the room block exists. Guests booking their own flights to a country where you have not yet held rooms will spread across six hotels, and the transport plan on the day becomes six transport plans.
• Production drawings cannot start before the guest number is roughly known. A stage, a mandap and a dance floor are sized to a room and a headcount. Draw them at 180 and build them at 260 and something has to be cut on site, in the week of, at the worst possible price.
• Permits cannot be filed before the layout is fixed. Anything that needs local sign-off — rigging, open flame, amplified sound past a certain hour, drone — is approved against a drawing. Change the drawing and you are back in the queue.
• Final numbers cannot wait for the last RSVP. Catering, seating, transport and staffing all lock at the same moment, and that moment is set by your suppliers, not by your slowest cousin.

If you are already inside the window

Most couples who get in touch are not eighteen months out. They are at nine, or six, or sometimes four, and the honest answer is that the timeline compresses rather than breaks.

What compresses well: décor design, stationery, the run sheet, most of the supplier list. What does not: the venue on a peak Saturday, the permits, and anything that has to be fabricated rather than hired. If the date is close, the first conversation is about which of those three is going to be the binding constraint — and it is much better to know that in week one than in month four.

The paperwork is the one that surprises people most, so it has its own note.

The milestones

Read these backwards from the day. Each is not a suggestion about when to start thinking about something — it is the point by which the decision has to exist, because the next one is waiting on it.