The right timeline depends on your date, venue and suppliers. This is a sequence of decisions rather than a promise about lead times. Use actual contract deadlines to turn it into a calendar.
Early: know the space
Once the venue is chosen, gather the floor plan, measurements, included furnishings, access times and decor restrictions. Decide which moments deserve focus before collecting dozens of inspiration images. Establish a working budget that includes labor and transport.
If a venue is not chosen yet, keep ideas flexible. A specific backdrop or table layout can be hard to carry into a very different space. See the venue questions for what to gather before committing.
Middle: test the design
Build a zone-by-zone plan and request details from relevant providers. Review dimensions, quantities, scope and terms. If possible, make a sample place setting; verify candle rules and identify who supplies each layer. Put weather alternatives beside the main plan, not in a separate forgotten document.
As the guest count and layout settle, update quantities. Check revision deadlines with each supplier. A change to table count affects linens, centerpieces, place cards and setup time at once.
Final stretch: assign people
Share one final plan with the venue, coordinator and suppliers: delivery windows, floor plan, placement photos, contact numbers, ceremony-to-reception moves and strike instructions. Use the rental checklist to make handoffs explicit.
In the final days, confirm the weather decision time and who communicates changes. After the event, keep one person responsible for checking returns and gathering personal keepsakes. Do not make newlyweds the default logistics team.