The #1 reason events run late: vendors don't have the same schedule. The caterer thinks dinner is at 6:30. The DJ thinks it's at 7:00. The photographer leaves at 9 but the couple wanted sunset portraits at 8:45. A shared timeline fixes all of this.

1. Create One Master Timeline

Not a spreadsheet you email around. Not a text thread. One link that every vendor can access on their phone. When you update it, everyone sees the latest version instantly.

2. Include Vendor-Specific Notes

Don't just write "6:00 PM — Dinner." Write "6:00 PM — Dinner service begins (Catering: start plating at 5:45, salad course first, main at 6:15)." The more specific you are, the fewer questions you'll get day-of.

3. Add Setup and Breakdown Times

Every vendor needs time before and after the event. If your florist needs 2 hours to set up and the venue opens at 2 PM, put "2:00 PM — Florist arrives for setup" on the timeline. Don't assume they'll figure it out.

4. Build in 15-Minute Buffers

Between every major block (ceremony → cocktail hour → reception), add 15 minutes of padding. Things always take longer than planned. The buffer is invisible to guests but saves you from a cascading delay.

5. Put Contact Info on the Timeline

At the top of your timeline, list the day-of coordinator's phone number. Every vendor should know exactly who to call if something comes up. Don't make them scroll through emails to find a number.

6. Send It 2 Weeks Before + Day Before

Send the timeline to all vendors 2 weeks out so they can flag conflicts. Then send a final version the day before with any last-minute changes. Two touchpoints = no excuses.

7. Use a Shareable Link, Not a PDF

PDFs get buried in email. A shareable link is one tap on a phone. If you update the timeline at midnight the night before, the link reflects the change immediately. PDFs don't. For a deeper look at timeline formats and which tools work best, see our event timeline software comparison. And read our full guide on sharing timelines with vendors for the complete playbook.